19710320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{577}}^1$

素因数の和:658

約数の個数: 80

約数和(自身を含む): 53323968

約数和(自身を除く): 33613648

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 577, 610, 854, 976, 1154, 1220, 1708, 2135, 2308, 2440, 2885, 3416, 4039, 4270, 4616, 4880, 5770, 6832, 8078, 8540, 9232, 11540, 16156, 17080, 20195, 23080, 32312, 34160, 35197, 40390, 46160, 64624, 70394, 80780, 140788, 161560, 175985, 246379, 281576, 323120, 351970, 492758, 563152, 703940, 985516, 1231895, 1407880, 1971032, 2463790, 2815760, 3942064, 4927580, 9855160, 19710320]

約数ペア:

[(1, 19710320), (2, 9855160), (4, 4927580), (5, 3942064), (7, 2815760), (8, 2463790), (10, 1971032), (14, 1407880), (16, 1231895), (20, 985516), (28, 703940), (35, 563152), (40, 492758), (56, 351970), (61, 323120), (70, 281576), (80, 246379), (112, 175985), (122, 161560), (140, 140788), (244, 80780), (280, 70394), (305, 64624), (427, 46160), (488, 40390), (560, 35197), (577, 34160), (610, 32312), (854, 23080), (976, 20195), (1154, 17080), (1220, 16156), (1708, 11540), (2135, 9232), (2308, 8540), (2440, 8078), (2885, 6832), (3416, 5770), (4039, 4880), (4270, 4616)]