81735920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{719}}^1$

素因数の和:775

約数の個数: 120

約数和(自身を含む): 229003200

約数和(自身を除く): 147267280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 35, 40, 49, 56, 58, 70, 80, 98, 112, 116, 140, 145, 196, 203, 232, 245, 280, 290, 392, 406, 464, 490, 560, 580, 719, 784, 812, 980, 1015, 1160, 1421, 1438, 1624, 1960, 2030, 2320, 2842, 2876, 3248, 3595, 3920, 4060, 5033, 5684, 5752, 7105, 7190, 8120, 10066, 11368, 11504, 14210, 14380, 16240, 20132, 20851, 22736, 25165, 28420, 28760, 35231, 40264, 41702, 50330, 56840, 57520, 70462, 80528, 83404, 100660, 104255, 113680, 140924, 145957, 166808, 176155, 201320, 208510, 281848, 291914, 333616, 352310, 402640, 417020, 563696, 583828, 704620, 729785, 834040, 1021699, 1167656, 1409240, 1459570, 1668080, 2043398, 2335312, 2818480, 2919140, 4086796, 5108495, 5838280, 8173592, 10216990, 11676560, 16347184, 20433980, 40867960, 81735920]

約数ペア:

[(1, 81735920), (2, 40867960), (4, 20433980), (5, 16347184), (7, 11676560), (8, 10216990), (10, 8173592), (14, 5838280), (16, 5108495), (20, 4086796), (28, 2919140), (29, 2818480), (35, 2335312), (40, 2043398), (49, 1668080), (56, 1459570), (58, 1409240), (70, 1167656), (80, 1021699), (98, 834040), (112, 729785), (116, 704620), (140, 583828), (145, 563696), (196, 417020), (203, 402640), (232, 352310), (245, 333616), (280, 291914), (290, 281848), (392, 208510), (406, 201320), (464, 176155), (490, 166808), (560, 145957), (580, 140924), (719, 113680), (784, 104255), (812, 100660), (980, 83404), (1015, 80528), (1160, 70462), (1421, 57520), (1438, 56840), (1624, 50330), (1960, 41702), (2030, 40264), (2320, 35231), (2842, 28760), (2876, 28420), (3248, 25165), (3595, 22736), (3920, 20851), (4060, 20132), (5033, 16240), (5684, 14380), (5752, 14210), (7105, 11504), (7190, 11368), (8120, 10066)]