211947245

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{997}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 280669536

約数和(自身を除く): 68722291

約数列:

[1, 5, 17, 41, 61, 85, 205, 305, 697, 997, 1037, 2501, 3485, 4985, 5185, 12505, 16949, 40877, 42517, 60817, 84745, 204385, 212585, 304085, 694909, 1033889, 2493497, 3474545, 5169445, 12467485, 42389449, 211947245]

約数ペア:

[(1, 211947245), (5, 42389449), (17, 12467485), (41, 5169445), (61, 3474545), (85, 2493497), (205, 1033889), (305, 694909), (697, 304085), (997, 212585), (1037, 204385), (2501, 84745), (3485, 60817), (4985, 42517), (5185, 40877), (12505, 16949)]