90885680

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{16001}}^1$

素因数の和:16085

約数の個数: 40

約数和(自身を含む): 214298784

約数和(自身を除く): 123413104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 16001, 32002, 64004, 80005, 128008, 160010, 256016, 320020, 640040, 1136071, 1280080, 2272142, 4544284, 5680355, 9088568, 11360710, 18177136, 22721420, 45442840, 90885680]

約数ペア:

[(1, 90885680), (2, 45442840), (4, 22721420), (5, 18177136), (8, 11360710), (10, 9088568), (16, 5680355), (20, 4544284), (40, 2272142), (71, 1280080), (80, 1136071), (142, 640040), (284, 320020), (355, 256016), (568, 160010), (710, 128008), (1136, 80005), (1420, 64004), (2840, 32002), (5680, 16001)]