389156560

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{374189}}^1$

素因数の和:374215

約数の個数: 40

約数和(自身を含む): 974390760

約数和(自身を除く): 585234200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 374189, 748378, 1496756, 1870945, 2993512, 3741890, 4864457, 5987024, 7483780, 9728914, 14967560, 19457828, 24322285, 29935120, 38915656, 48644570, 77831312, 97289140, 194578280, 389156560]

約数ペア:

[(1, 389156560), (2, 194578280), (4, 97289140), (5, 77831312), (8, 48644570), (10, 38915656), (13, 29935120), (16, 24322285), (20, 19457828), (26, 14967560), (40, 9728914), (52, 7483780), (65, 5987024), (80, 4864457), (104, 3741890), (130, 2993512), (208, 1870945), (260, 1496756), (520, 748378), (1040, 374189)]