206488380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{491639}}^1$

素因数の和:491658

約数の個数: 48

約数和(自身を含む): 660764160

約数和(自身を除く): 454275780

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, 491639, 983278, 1474917, 1966556, 2458195, 2949834, 3441473, 4916390, 5899668, 6882946, 7374585, 9832780, 10324419, 13765892, 14749170, 17207365, 20648838, 29498340, 34414730, 41297676, 51622095, 68829460, 103244190, 206488380]

約数ペア:

[(1, 206488380), (2, 103244190), (3, 68829460), (4, 51622095), (5, 41297676), (6, 34414730), (7, 29498340), (10, 20648838), (12, 17207365), (14, 14749170), (15, 13765892), (20, 10324419), (21, 9832780), (28, 7374585), (30, 6882946), (35, 5899668), (42, 4916390), (60, 3441473), (70, 2949834), (84, 2458195), (105, 1966556), (140, 1474917), (210, 983278), (420, 491639)]