20318920

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{13729}}^1$

素因数の和:13777

約数の個数: 32

約数和(自身を含む): 46956600

約数和(自身を除く): 26637680

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 13729, 27458, 54916, 68645, 109832, 137290, 274580, 507973, 549160, 1015946, 2031892, 2539865, 4063784, 5079730, 10159460, 20318920]

約数ペア:

[(1, 20318920), (2, 10159460), (4, 5079730), (5, 4063784), (8, 2539865), (10, 2031892), (20, 1015946), (37, 549160), (40, 507973), (74, 274580), (148, 137290), (185, 109832), (296, 68645), (370, 54916), (740, 27458), (1480, 13729)]