21647940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{191}}^1\times {\mathrm{1889}}^1$

素因数の和:2092

約数の個数: 48

約数和(自身を含む): 60963840

約数和(自身を除く): 39315900

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 191, 382, 573, 764, 955, 1146, 1889, 1910, 2292, 2865, 3778, 3820, 5667, 5730, 7556, 9445, 11334, 11460, 18890, 22668, 28335, 37780, 56670, 113340, 360799, 721598, 1082397, 1443196, 1803995, 2164794, 3607990, 4329588, 5411985, 7215980, 10823970, 21647940]

約数ペア:

[(1, 21647940), (2, 10823970), (3, 7215980), (4, 5411985), (5, 4329588), (6, 3607990), (10, 2164794), (12, 1803995), (15, 1443196), (20, 1082397), (30, 721598), (60, 360799), (191, 113340), (382, 56670), (573, 37780), (764, 28335), (955, 22668), (1146, 18890), (1889, 11460), (1910, 11334), (2292, 9445), (2865, 7556), (3778, 5730), (3820, 5667)]