21730228

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{509}}^1\times {\mathrm{821}}^1$

素因数の和:1347

約数の個数: 24

約数和(自身を含む): 41083560

約数和(自身を除く): 19353332

約数列:

[1, 2, 4, 13, 26, 52, 509, 821, 1018, 1642, 2036, 3284, 6617, 10673, 13234, 21346, 26468, 42692, 417889, 835778, 1671556, 5432557, 10865114, 21730228]

約数ペア:

[(1, 21730228), (2, 10865114), (4, 5432557), (13, 1671556), (26, 835778), (52, 417889), (509, 42692), (821, 26468), (1018, 21346), (1642, 13234), (2036, 10673), (3284, 6617)]