20661120

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1$

素因数の和:253

約数の個数: 192

約数和(自身を含む): 75900240

約数和(自身を除く): 55239120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 64, 68, 72, 80, 85, 90, 96, 102, 120, 128, 136, 144, 153, 160, 170, 180, 192, 204, 211, 240, 255, 272, 288, 306, 320, 340, 360, 384, 408, 422, 480, 510, 544, 576, 612, 633, 640, 680, 720, 765, 816, 844, 960, 1020, 1055, 1088, 1152, 1224, 1266, 1360, 1440, 1530, 1632, 1688, 1899, 1920, 2040, 2110, 2176, 2448, 2532, 2720, 2880, 3060, 3165, 3264, 3376, 3587, 3798, 4080, 4220, 4896, 5064, 5440, 5760, 6120, 6330, 6528, 6752, 7174, 7596, 8160, 8440, 9495, 9792, 10128, 10761, 10880, 12240, 12660, 13504, 14348, 15192, 16320, 16880, 17935, 18990, 19584, 20256, 21522, 24480, 25320, 27008, 28696, 30384, 32283, 32640, 33760, 35870, 37980, 40512, 43044, 48960, 50640, 53805, 57392, 60768, 64566, 67520, 71740, 75960, 81024, 86088, 97920, 101280, 107610, 114784, 121536, 129132, 135040, 143480, 151920, 161415, 172176, 202560, 215220, 229568, 243072, 258264, 286960, 303840, 322830, 344352, 405120, 430440, 459136, 516528, 573920, 607680, 645660, 688704, 860880, 1033056, 1147840, 1215360, 1291320, 1377408, 1721760, 2066112, 2295680, 2582640, 3443520, 4132224, 5165280, 6887040, 10330560, 20661120]

約数ペア:

[(1, 20661120), (2, 10330560), (3, 6887040), (4, 5165280), (5, 4132224), (6, 3443520), (8, 2582640), (9, 2295680), (10, 2066112), (12, 1721760), (15, 1377408), (16, 1291320), (17, 1215360), (18, 1147840), (20, 1033056), (24, 860880), (30, 688704), (32, 645660), (34, 607680), (36, 573920), (40, 516528), (45, 459136), (48, 430440), (51, 405120), (60, 344352), (64, 322830), (68, 303840), (72, 286960), (80, 258264), (85, 243072), (90, 229568), (96, 215220), (102, 202560), (120, 172176), (128, 161415), (136, 151920), (144, 143480), (153, 135040), (160, 129132), (170, 121536), (180, 114784), (192, 107610), (204, 101280), (211, 97920), (240, 86088), (255, 81024), (272, 75960), (288, 71740), (306, 67520), (320, 64566), (340, 60768), (360, 57392), (384, 53805), (408, 50640), (422, 48960), (480, 43044), (510, 40512), (544, 37980), (576, 35870), (612, 33760), (633, 32640), (640, 32283), (680, 30384), (720, 28696), (765, 27008), (816, 25320), (844, 24480), (960, 21522), (1020, 20256), (1055, 19584), (1088, 18990), (1152, 17935), (1224, 16880), (1266, 16320), (1360, 15192), (1440, 14348), (1530, 13504), (1632, 12660), (1688, 12240), (1899, 10880), (1920, 10761), (2040, 10128), (2110, 9792), (2176, 9495), (2448, 8440), (2532, 8160), (2720, 7596), (2880, 7174), (3060, 6752), (3165, 6528), (3264, 6330), (3376, 6120), (3587, 5760), (3798, 5440), (4080, 5064), (4220, 4896)]