21640016

素因数分解:

$2^4\times {\mathrm{239}}^1\times {\mathrm{5659}}^1$

素因数の和:5906

約数の個数: 20

約数和(自身を含む): 42110400

約数和(自身を除く): 20470384

約数列:

[1, 2, 4, 8, 16, 239, 478, 956, 1912, 3824, 5659, 11318, 22636, 45272, 90544, 1352501, 2705002, 5410004, 10820008, 21640016]

約数ペア:

[(1, 21640016), (2, 10820008), (4, 5410004), (8, 2705002), (16, 1352501), (239, 90544), (478, 45272), (956, 22636), (1912, 11318), (3824, 5659)]