21045256

素因数分解:

$2^3\times {\mathrm{163}}^1\times {\mathrm{16139}}^1$

素因数の和:16308

約数の個数: 16

約数和(自身を含む): 39704400

約数和(自身を除く): 18659144

約数列:

[1, 2, 4, 8, 163, 326, 652, 1304, 16139, 32278, 64556, 129112, 2630657, 5261314, 10522628, 21045256]

約数ペア:

[(1, 21045256), (2, 10522628), (4, 5261314), (8, 2630657), (163, 129112), (326, 64556), (652, 32278), (1304, 16139)]