38981840

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{6863}}^1$

素因数の和:6947

約数の個数: 40

約数和(自身を含む): 91922688

約数和(自身を除く): 52940848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 5680, 6863, 13726, 27452, 34315, 54904, 68630, 109808, 137260, 274520, 487273, 549040, 974546, 1949092, 2436365, 3898184, 4872730, 7796368, 9745460, 19490920, 38981840]

約数ペア:

[(1, 38981840), (2, 19490920), (4, 9745460), (5, 7796368), (8, 4872730), (10, 3898184), (16, 2436365), (20, 1949092), (40, 974546), (71, 549040), (80, 487273), (142, 274520), (284, 137260), (355, 109808), (568, 68630), (710, 54904), (1136, 34315), (1420, 27452), (2840, 13726), (5680, 6863)]