20587720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16603}}^1$

素因数の和:16645

約数の個数: 32

約数和(自身を含む): 47819520

約数和(自身を除く): 27231800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16603, 33206, 66412, 83015, 132824, 166030, 332060, 514693, 664120, 1029386, 2058772, 2573465, 4117544, 5146930, 10293860, 20587720]

約数ペア:

[(1, 20587720), (2, 10293860), (4, 5146930), (5, 4117544), (8, 2573465), (10, 2058772), (20, 1029386), (31, 664120), (40, 514693), (62, 332060), (124, 166030), (155, 132824), (248, 83015), (310, 66412), (620, 33206), (1240, 16603)]