68719880

素因数分解:

$2^3\times 5^1\times {\mathrm{347}}^1\times {\mathrm{4951}}^1$

素因数の和:5309

約数の個数: 32

約数和(自身を含む): 155096640

約数和(自身を除く): 86376760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 347, 694, 1388, 1735, 2776, 3470, 4951, 6940, 9902, 13880, 19804, 24755, 39608, 49510, 99020, 198040, 1717997, 3435994, 6871988, 8589985, 13743976, 17179970, 34359940, 68719880]

約数ペア:

[(1, 68719880), (2, 34359940), (4, 17179970), (5, 13743976), (8, 8589985), (10, 6871988), (20, 3435994), (40, 1717997), (347, 198040), (694, 99020), (1388, 49510), (1735, 39608), (2776, 24755), (3470, 19804), (4951, 13880), (6940, 9902)]