66786640

素因数分解:

$2^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{4999}}^1$

素因数の和:5179

約数の個数: 40

約数和(自身を含む): 156240000

約数和(自身を除く): 89453360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 167, 334, 668, 835, 1336, 1670, 2672, 3340, 4999, 6680, 9998, 13360, 19996, 24995, 39992, 49990, 79984, 99980, 199960, 399920, 834833, 1669666, 3339332, 4174165, 6678664, 8348330, 13357328, 16696660, 33393320, 66786640]

約数ペア:

[(1, 66786640), (2, 33393320), (4, 16696660), (5, 13357328), (8, 8348330), (10, 6678664), (16, 4174165), (20, 3339332), (40, 1669666), (80, 834833), (167, 399920), (334, 199960), (668, 99980), (835, 79984), (1336, 49990), (1670, 39992), (2672, 24995), (3340, 19996), (4999, 13360), (6680, 9998)]