290349780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{691309}}^1$

素因数の和:691328

約数の個数: 48

約数和(自身を含む): 929120640

約数和(自身を除く): 638770860

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 691309, 1382618, 2073927, 2765236, 3456545, 4147854, 4839163, 6913090, 8295708, 9678326, 10369635, 13826180, 14517489, 19356652, 20739270, 24195815, 29034978, 41478540, 48391630, 58069956, 72587445, 96783260, 145174890, 290349780]

約数ペア:

[(1, 290349780), (2, 145174890), (3, 96783260), (4, 72587445), (5, 58069956), (6, 48391630), (7, 41478540), (10, 29034978), (12, 24195815), (14, 20739270), (15, 19356652), (20, 14517489), (21, 13826180), (28, 10369635), (30, 9678326), (35, 8295708), (42, 6913090), (60, 4839163), (70, 4147854), (84, 3456545), (105, 2765236), (140, 2073927), (210, 1382618), (420, 691309)]