64116620

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{78191}}^1$

素因数の和:78241

約数の個数: 24

約数和(自身を含む): 137930688

約数和(自身を除く): 73814068

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 78191, 156382, 312764, 390955, 781910, 1563820, 3205831, 6411662, 12823324, 16029155, 32058310, 64116620]

約数ペア:

[(1, 64116620), (2, 32058310), (4, 16029155), (5, 12823324), (10, 6411662), (20, 3205831), (41, 1563820), (82, 781910), (164, 390955), (205, 312764), (410, 156382), (820, 78191)]