19681920

素因数分解:

$2^7\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1$

素因数の和:112

約数の個数: 256

約数和(自身を含む): 74908800

約数和(自身を除く): 55226880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 32, 34, 36, 40, 45, 48, 51, 54, 60, 64, 67, 68, 72, 80, 85, 90, 96, 102, 108, 120, 128, 134, 135, 136, 144, 153, 160, 170, 180, 192, 201, 204, 216, 240, 255, 268, 270, 272, 288, 306, 320, 335, 340, 360, 384, 402, 408, 432, 459, 480, 510, 536, 540, 544, 576, 603, 612, 640, 670, 680, 720, 765, 804, 816, 864, 918, 960, 1005, 1020, 1072, 1080, 1088, 1139, 1152, 1206, 1224, 1340, 1360, 1440, 1530, 1608, 1632, 1728, 1809, 1836, 1920, 2010, 2040, 2144, 2160, 2176, 2278, 2295, 2412, 2448, 2680, 2720, 2880, 3015, 3060, 3216, 3264, 3417, 3456, 3618, 3672, 4020, 4080, 4288, 4320, 4556, 4590, 4824, 4896, 5360, 5440, 5695, 5760, 6030, 6120, 6432, 6528, 6834, 7236, 7344, 8040, 8160, 8576, 8640, 9045, 9112, 9180, 9648, 9792, 10251, 10720, 10880, 11390, 12060, 12240, 12864, 13668, 14472, 14688, 16080, 16320, 17085, 17280, 18090, 18224, 18360, 19296, 19584, 20502, 21440, 22780, 24120, 24480, 25728, 27336, 28944, 29376, 30753, 32160, 32640, 34170, 36180, 36448, 36720, 38592, 41004, 42880, 45560, 48240, 48960, 51255, 54672, 57888, 58752, 61506, 64320, 68340, 72360, 72896, 73440, 77184, 82008, 91120, 96480, 97920, 102510, 109344, 115776, 123012, 128640, 136680, 144720, 145792, 146880, 153765, 164016, 182240, 192960, 205020, 218688, 231552, 246024, 273360, 289440, 293760, 307530, 328032, 364480, 385920, 410040, 437376, 492048, 546720, 578880, 615060, 656064, 728960, 820080, 984096, 1093440, 1157760, 1230120, 1312128, 1640160, 1968192, 2186880, 2460240, 3280320, 3936384, 4920480, 6560640, 9840960, 19681920]

約数ペア:

[(1, 19681920), (2, 9840960), (3, 6560640), (4, 4920480), (5, 3936384), (6, 3280320), (8, 2460240), (9, 2186880), (10, 1968192), (12, 1640160), (15, 1312128), (16, 1230120), (17, 1157760), (18, 1093440), (20, 984096), (24, 820080), (27, 728960), (30, 656064), (32, 615060), (34, 578880), (36, 546720), (40, 492048), (45, 437376), (48, 410040), (51, 385920), (54, 364480), (60, 328032), (64, 307530), (67, 293760), (68, 289440), (72, 273360), (80, 246024), (85, 231552), (90, 218688), (96, 205020), (102, 192960), (108, 182240), (120, 164016), (128, 153765), (134, 146880), (135, 145792), (136, 144720), (144, 136680), (153, 128640), (160, 123012), (170, 115776), (180, 109344), (192, 102510), (201, 97920), (204, 96480), (216, 91120), (240, 82008), (255, 77184), (268, 73440), (270, 72896), (272, 72360), (288, 68340), (306, 64320), (320, 61506), (335, 58752), (340, 57888), (360, 54672), (384, 51255), (402, 48960), (408, 48240), (432, 45560), (459, 42880), (480, 41004), (510, 38592), (536, 36720), (540, 36448), (544, 36180), (576, 34170), (603, 32640), (612, 32160), (640, 30753), (670, 29376), (680, 28944), (720, 27336), (765, 25728), (804, 24480), (816, 24120), (864, 22780), (918, 21440), (960, 20502), (1005, 19584), (1020, 19296), (1072, 18360), (1080, 18224), (1088, 18090), (1139, 17280), (1152, 17085), (1206, 16320), (1224, 16080), (1340, 14688), (1360, 14472), (1440, 13668), (1530, 12864), (1608, 12240), (1632, 12060), (1728, 11390), (1809, 10880), (1836, 10720), (1920, 10251), (2010, 9792), (2040, 9648), (2144, 9180), (2160, 9112), (2176, 9045), (2278, 8640), (2295, 8576), (2412, 8160), (2448, 8040), (2680, 7344), (2720, 7236), (2880, 6834), (3015, 6528), (3060, 6432), (3216, 6120), (3264, 6030), (3417, 5760), (3456, 5695), (3618, 5440), (3672, 5360), (4020, 4896), (4080, 4824), (4288, 4590), (4320, 4556)]