19942720

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:360

約数の個数: 112

約数和(自身を含む): 56327040

約数和(自身を除く): 36384320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 32, 35, 40, 56, 58, 64, 70, 80, 112, 116, 140, 145, 160, 203, 224, 232, 280, 290, 307, 320, 406, 448, 464, 560, 580, 614, 812, 928, 1015, 1120, 1160, 1228, 1535, 1624, 1856, 2030, 2149, 2240, 2320, 2456, 3070, 3248, 4060, 4298, 4640, 4912, 6140, 6496, 8120, 8596, 8903, 9280, 9824, 10745, 12280, 12992, 16240, 17192, 17806, 19648, 21490, 24560, 32480, 34384, 35612, 42980, 44515, 49120, 62321, 64960, 68768, 71224, 85960, 89030, 98240, 124642, 137536, 142448, 171920, 178060, 249284, 284896, 311605, 343840, 356120, 498568, 569792, 623210, 687680, 712240, 997136, 1246420, 1424480, 1994272, 2492840, 2848960, 3988544, 4985680, 9971360, 19942720]

約数ペア:

[(1, 19942720), (2, 9971360), (4, 4985680), (5, 3988544), (7, 2848960), (8, 2492840), (10, 1994272), (14, 1424480), (16, 1246420), (20, 997136), (28, 712240), (29, 687680), (32, 623210), (35, 569792), (40, 498568), (56, 356120), (58, 343840), (64, 311605), (70, 284896), (80, 249284), (112, 178060), (116, 171920), (140, 142448), (145, 137536), (160, 124642), (203, 98240), (224, 89030), (232, 85960), (280, 71224), (290, 68768), (307, 64960), (320, 62321), (406, 49120), (448, 44515), (464, 42980), (560, 35612), (580, 34384), (614, 32480), (812, 24560), (928, 21490), (1015, 19648), (1120, 17806), (1160, 17192), (1228, 16240), (1535, 12992), (1624, 12280), (1856, 10745), (2030, 9824), (2149, 9280), (2240, 8903), (2320, 8596), (2456, 8120), (3070, 6496), (3248, 6140), (4060, 4912), (4298, 4640)]