7784020

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2971}}^1$

素因数の和:3111

約数の個数: 24

約数和(自身を含む): 16476768

約数和(自身を除く): 8692748

約数列:

[1, 2, 4, 5, 10, 20, 131, 262, 524, 655, 1310, 2620, 2971, 5942, 11884, 14855, 29710, 59420, 389201, 778402, 1556804, 1946005, 3892010, 7784020]

約数ペア:

[(1, 7784020), (2, 3892010), (4, 1946005), (5, 1556804), (10, 778402), (20, 389201), (131, 59420), (262, 29710), (524, 14855), (655, 11884), (1310, 5942), (2620, 2971)]