18883909540

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{563}}^1\times {\mathrm{31643}}^1$

素因数の和:32268

約数の個数: 48

約数和(自身を含む): 40477485888

約数和(自身を除く): 21593576348

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 563, 1060, 1126, 2252, 2815, 5630, 11260, 29839, 31643, 59678, 63286, 119356, 126572, 149195, 158215, 298390, 316430, 596780, 632860, 1677079, 3354158, 6708316, 8385395, 16770790, 17815009, 33541580, 35630018, 71260036, 89075045, 178150090, 356300180, 944195477, 1888390954, 3776781908, 4720977385, 9441954770, 18883909540]

約数ペア:

[(1, 18883909540), (2, 9441954770), (4, 4720977385), (5, 3776781908), (10, 1888390954), (20, 944195477), (53, 356300180), (106, 178150090), (212, 89075045), (265, 71260036), (530, 35630018), (563, 33541580), (1060, 17815009), (1126, 16770790), (2252, 8385395), (2815, 6708316), (5630, 3354158), (11260, 1677079), (29839, 632860), (31643, 596780), (59678, 316430), (63286, 298390), (119356, 158215), (126572, 149195)]