19904890

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{2339}}^1$

素因数の和:2406

約数の個数: 32

約数和(自身を含む): 38413440

約数和(自身を除く): 18508550

約数列:

[1, 2, 5, 10, 23, 37, 46, 74, 115, 185, 230, 370, 851, 1702, 2339, 4255, 4678, 8510, 11695, 23390, 53797, 86543, 107594, 173086, 268985, 432715, 537970, 865430, 1990489, 3980978, 9952445, 19904890]

約数ペア:

[(1, 19904890), (2, 9952445), (5, 3980978), (10, 1990489), (23, 865430), (37, 537970), (46, 432715), (74, 268985), (115, 173086), (185, 107594), (230, 86543), (370, 53797), (851, 23390), (1702, 11695), (2339, 8510), (4255, 4678)]