20641149

素因数分解:

$3^5\times {\mathrm{173}}^1\times {\mathrm{491}}^1$

素因数の和:679

約数の個数: 24

約数和(自身を含む): 31161312

約数和(自身を除く): 10520163

約数列:

[1, 3, 9, 27, 81, 173, 243, 491, 519, 1473, 1557, 4419, 4671, 13257, 14013, 39771, 42039, 84943, 119313, 254829, 764487, 2293461, 6880383, 20641149]

約数ペア:

[(1, 20641149), (3, 6880383), (9, 2293461), (27, 764487), (81, 254829), (173, 119313), (243, 84943), (491, 42039), (519, 39771), (1473, 14013), (1557, 13257), (4419, 4671)]