20977461

素因数分解:

$3^5\times {\mathrm{173}}^1\times {\mathrm{499}}^1$

素因数の和:687

約数の個数: 24

約数和(自身を含む): 31668000

約数和(自身を除く): 10690539

約数列:

[1, 3, 9, 27, 81, 173, 243, 499, 519, 1497, 1557, 4491, 4671, 13473, 14013, 40419, 42039, 86327, 121257, 258981, 776943, 2330829, 6992487, 20977461]

約数ペア:

[(1, 20977461), (3, 6992487), (9, 2330829), (27, 776943), (81, 258981), (173, 121257), (243, 86327), (499, 42039), (519, 40419), (1497, 14013), (1557, 13473), (4491, 4671)]