20542460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{1949}}^1$

素因数の和:2006

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 26631940

約数列:

[1, 2, 4, 5, 10, 17, 20, 31, 34, 62, 68, 85, 124, 155, 170, 310, 340, 527, 620, 1054, 1949, 2108, 2635, 3898, 5270, 7796, 9745, 10540, 19490, 33133, 38980, 60419, 66266, 120838, 132532, 165665, 241676, 302095, 331330, 604190, 662660, 1027123, 1208380, 2054246, 4108492, 5135615, 10271230, 20542460]

約数ペア:

[(1, 20542460), (2, 10271230), (4, 5135615), (5, 4108492), (10, 2054246), (17, 1208380), (20, 1027123), (31, 662660), (34, 604190), (62, 331330), (68, 302095), (85, 241676), (124, 165665), (155, 132532), (170, 120838), (310, 66266), (340, 60419), (527, 38980), (620, 33133), (1054, 19490), (1949, 10540), (2108, 9745), (2635, 7796), (3898, 5270)]