20966540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4831}}^1$

素因数の和:4878

約数の個数: 48

約数和(自身を含む): 51953664

約数和(自身を除く): 30987124

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, 4831, 9662, 19324, 24155, 33817, 48310, 67634, 96620, 135268, 149761, 169085, 299522, 338170, 599044, 676340, 748805, 1048327, 1497610, 2096654, 2995220, 4193308, 5241635, 10483270, 20966540]

約数ペア:

[(1, 20966540), (2, 10483270), (4, 5241635), (5, 4193308), (7, 2995220), (10, 2096654), (14, 1497610), (20, 1048327), (28, 748805), (31, 676340), (35, 599044), (62, 338170), (70, 299522), (124, 169085), (140, 149761), (155, 135268), (217, 96620), (310, 67634), (434, 48310), (620, 33817), (868, 24155), (1085, 19324), (2170, 9662), (4340, 4831)]