21803684

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9857}}^1$

素因数の和:9947

約数の個数: 24

約数和(自身を含む): 44163840

約数和(自身を除く): 22360156

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9857, 19714, 39428, 68999, 137998, 275996, 778703, 1557406, 3114812, 5450921, 10901842, 21803684]

約数ペア:

[(1, 21803684), (2, 10901842), (4, 5450921), (7, 3114812), (14, 1557406), (28, 778703), (79, 275996), (158, 137998), (316, 68999), (553, 39428), (1106, 19714), (2212, 9857)]