221513705

素因数分解:

$5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{223}}^1\times {\mathrm{281}}^1$

素因数の和:617

約数の個数: 32

約数和(自身を含む): 309270528

約数和(自身を除く): 87756823

約数列:

[1, 5, 7, 35, 101, 223, 281, 505, 707, 1115, 1405, 1561, 1967, 3535, 7805, 9835, 22523, 28381, 62663, 112615, 141905, 157661, 198667, 313315, 438641, 788305, 993335, 2193205, 6328963, 31644815, 44302741, 221513705]

約数ペア:

[(1, 221513705), (5, 44302741), (7, 31644815), (35, 6328963), (101, 2193205), (223, 993335), (281, 788305), (505, 438641), (707, 313315), (1115, 198667), (1405, 157661), (1561, 141905), (1967, 112615), (3535, 62663), (7805, 28381), (9835, 22523)]