21708995

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{113}}^1\times {\mathrm{499}}^1$

素因数の和:635

約数の個数: 32

約数和(自身を含む): 32832000

約数和(自身を除く): 11123005

約数列:

[1, 5, 7, 11, 35, 55, 77, 113, 385, 499, 565, 791, 1243, 2495, 3493, 3955, 5489, 6215, 8701, 17465, 27445, 38423, 43505, 56387, 192115, 281935, 394709, 620257, 1973545, 3101285, 4341799, 21708995]

約数ペア:

[(1, 21708995), (5, 4341799), (7, 3101285), (11, 1973545), (35, 620257), (55, 394709), (77, 281935), (113, 192115), (385, 56387), (499, 43505), (565, 38423), (791, 27445), (1243, 17465), (2495, 8701), (3493, 6215), (3955, 5489)]