66807220

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{4129}}^1$

素因数の和:4947

約数の個数: 24

約数和(自身を含む): 140502600

約数和(自身を除く): 73695380

約数列:

[1, 2, 4, 5, 10, 20, 809, 1618, 3236, 4045, 4129, 8090, 8258, 16180, 16516, 20645, 41290, 82580, 3340361, 6680722, 13361444, 16701805, 33403610, 66807220]

約数ペア:

[(1, 66807220), (2, 33403610), (4, 16701805), (5, 13361444), (10, 6680722), (20, 3340361), (809, 82580), (1618, 41290), (3236, 20645), (4045, 16516), (4129, 16180), (8090, 8258)]