20663335

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{281}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 31186944

約数和(自身を除く): 10523609

約数列:

[1, 5, 7, 11, 35, 55, 77, 191, 281, 385, 955, 1337, 1405, 1967, 2101, 3091, 6685, 9835, 10505, 14707, 15455, 21637, 53671, 73535, 108185, 268355, 375697, 590381, 1878485, 2951905, 4132667, 20663335]

約数ペア:

[(1, 20663335), (5, 4132667), (7, 2951905), (11, 1878485), (35, 590381), (55, 375697), (77, 268355), (191, 108185), (281, 73535), (385, 53671), (955, 21637), (1337, 15455), (1405, 14707), (1967, 10505), (2101, 9835), (3091, 6685)]