20909216

素因数分解:

$2^5\times {\mathrm{71}}^1\times {\mathrm{9203}}^1$

素因数の和:9284

約数の個数: 24

約数和(自身を含む): 41749344

約数和(自身を除く): 20840128

約数列:

[1, 2, 4, 8, 16, 32, 71, 142, 284, 568, 1136, 2272, 9203, 18406, 36812, 73624, 147248, 294496, 653413, 1306826, 2613652, 5227304, 10454608, 20909216]

約数ペア:

[(1, 20909216), (2, 10454608), (4, 5227304), (8, 2613652), (16, 1306826), (32, 653413), (71, 294496), (142, 147248), (284, 73624), (568, 36812), (1136, 18406), (2272, 9203)]