19953920

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1$

素因数の和:176

約数の個数: 144

約数和(自身を含む): 58278528

約数和(自身を除く): 38324608

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 64, 68, 70, 80, 85, 112, 119, 128, 131, 136, 140, 160, 170, 224, 238, 256, 262, 272, 280, 320, 340, 448, 476, 524, 544, 560, 595, 640, 655, 680, 896, 917, 952, 1048, 1088, 1120, 1190, 1280, 1310, 1360, 1792, 1834, 1904, 2096, 2176, 2227, 2240, 2380, 2620, 2720, 3668, 3808, 4192, 4352, 4454, 4480, 4585, 4760, 5240, 5440, 7336, 7616, 8384, 8908, 8960, 9170, 9520, 10480, 10880, 11135, 14672, 15232, 15589, 16768, 17816, 18340, 19040, 20960, 21760, 22270, 29344, 30464, 31178, 33536, 35632, 36680, 38080, 41920, 44540, 58688, 62356, 71264, 73360, 76160, 77945, 83840, 89080, 117376, 124712, 142528, 146720, 152320, 155890, 167680, 178160, 234752, 249424, 285056, 293440, 311780, 356320, 498848, 570112, 586880, 623560, 712640, 997696, 1173760, 1247120, 1425280, 1995392, 2494240, 2850560, 3990784, 4988480, 9976960, 19953920]

約数ペア:

[(1, 19953920), (2, 9976960), (4, 4988480), (5, 3990784), (7, 2850560), (8, 2494240), (10, 1995392), (14, 1425280), (16, 1247120), (17, 1173760), (20, 997696), (28, 712640), (32, 623560), (34, 586880), (35, 570112), (40, 498848), (56, 356320), (64, 311780), (68, 293440), (70, 285056), (80, 249424), (85, 234752), (112, 178160), (119, 167680), (128, 155890), (131, 152320), (136, 146720), (140, 142528), (160, 124712), (170, 117376), (224, 89080), (238, 83840), (256, 77945), (262, 76160), (272, 73360), (280, 71264), (320, 62356), (340, 58688), (448, 44540), (476, 41920), (524, 38080), (544, 36680), (560, 35632), (595, 33536), (640, 31178), (655, 30464), (680, 29344), (896, 22270), (917, 21760), (952, 20960), (1048, 19040), (1088, 18340), (1120, 17816), (1190, 16768), (1280, 15589), (1310, 15232), (1360, 14672), (1792, 11135), (1834, 10880), (1904, 10480), (2096, 9520), (2176, 9170), (2227, 8960), (2240, 8908), (2380, 8384), (2620, 7616), (2720, 7336), (3668, 5440), (3808, 5240), (4192, 4760), (4352, 4585), (4454, 4480)]