20497820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4723}}^1$

素因数の和:4770

約数の個数: 48

約数和(自身を含む): 50792448

約数和(自身を除く): 30294628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 4723, 9446, 18892, 23615, 33061, 47230, 66122, 94460, 132244, 146413, 165305, 292826, 330610, 585652, 661220, 732065, 1024891, 1464130, 2049782, 2928260, 4099564, 5124455, 10248910, 20497820]

約数ペア:

[(1, 20497820), (2, 10248910), (4, 5124455), (5, 4099564), (7, 2928260), (10, 2049782), (14, 1464130), (20, 1024891), (28, 732065), (31, 661220), (35, 585652), (62, 330610), (70, 292826), (124, 165305), (140, 146413), (155, 132244), (217, 94460), (310, 66122), (434, 47230), (620, 33061), (868, 23615), (1085, 18892), (2170, 9446), (4340, 4723)]