81275680

素因数分解:

$2^5\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13729}}^1$

素因数の和:13781

約数の個数: 48

約数和(自身を含む): 197217720

約数和(自身を除く): 115942040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 74, 80, 148, 160, 185, 296, 370, 592, 740, 1184, 1480, 2960, 5920, 13729, 27458, 54916, 68645, 109832, 137290, 219664, 274580, 439328, 507973, 549160, 1015946, 1098320, 2031892, 2196640, 2539865, 4063784, 5079730, 8127568, 10159460, 16255136, 20318920, 40637840, 81275680]

約数ペア:

[(1, 81275680), (2, 40637840), (4, 20318920), (5, 16255136), (8, 10159460), (10, 8127568), (16, 5079730), (20, 4063784), (32, 2539865), (37, 2196640), (40, 2031892), (74, 1098320), (80, 1015946), (148, 549160), (160, 507973), (185, 439328), (296, 274580), (370, 219664), (592, 137290), (740, 109832), (1184, 68645), (1480, 54916), (2960, 27458), (5920, 13729)]