99071980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{9967}}^1$

素因数の和:10054

約数の個数: 48

約数和(自身を含む): 241145856

約数和(自身を除く): 142073876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2485, 4970, 9940, 9967, 19934, 39868, 49835, 69769, 99670, 139538, 199340, 279076, 348845, 697690, 707657, 1395380, 1415314, 2830628, 3538285, 4953599, 7076570, 9907198, 14153140, 19814396, 24767995, 49535990, 99071980]

約数ペア:

[(1, 99071980), (2, 49535990), (4, 24767995), (5, 19814396), (7, 14153140), (10, 9907198), (14, 7076570), (20, 4953599), (28, 3538285), (35, 2830628), (70, 1415314), (71, 1395380), (140, 707657), (142, 697690), (284, 348845), (355, 279076), (497, 199340), (710, 139538), (994, 99670), (1420, 69769), (1988, 49835), (2485, 39868), (4970, 19934), (9940, 9967)]