21290520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{177421}}^1$

素因数の和:177435

約数の個数: 32

約数和(自身を含む): 63871920

約数和(自身を除く): 42581400

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 177421, 354842, 532263, 709684, 887105, 1064526, 1419368, 1774210, 2129052, 2661315, 3548420, 4258104, 5322630, 7096840, 10645260, 21290520]

約数ペア:

[(1, 21290520), (2, 10645260), (3, 7096840), (4, 5322630), (5, 4258104), (6, 3548420), (8, 2661315), (10, 2129052), (12, 1774210), (15, 1419368), (20, 1064526), (24, 887105), (30, 709684), (40, 532263), (60, 354842), (120, 177421)]