218071760

素因数分解:

$2^4\times 5^1\times {\mathrm{2725897}}^1$

素因数の和:2725910

約数の個数: 20

約数和(自身を含む): 507017028

約数和(自身を除く): 288945268

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2725897, 5451794, 10903588, 13629485, 21807176, 27258970, 43614352, 54517940, 109035880, 218071760]

約数ペア:

[(1, 218071760), (2, 109035880), (4, 54517940), (5, 43614352), (8, 27258970), (10, 21807176), (16, 13629485), (20, 10903588), (40, 5451794), (80, 2725897)]