21209640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{176747}}^1$

素因数の和:176761

約数の個数: 32

約数和(自身を含む): 63629280

約数和(自身を除く): 42419640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 176747, 353494, 530241, 706988, 883735, 1060482, 1413976, 1767470, 2120964, 2651205, 3534940, 4241928, 5302410, 7069880, 10604820, 21209640]

約数ペア:

[(1, 21209640), (2, 10604820), (3, 7069880), (4, 5302410), (5, 4241928), (6, 3534940), (8, 2651205), (10, 2120964), (12, 1767470), (15, 1413976), (20, 1060482), (24, 883735), (30, 706988), (40, 530241), (60, 353494), (120, 176747)]