21303579

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{557}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 33212160

約数和(自身を除く): 11908581

約数列:

[1, 3, 11, 19, 33, 57, 61, 183, 209, 557, 627, 671, 1159, 1671, 2013, 3477, 6127, 10583, 12749, 18381, 31749, 33977, 38247, 101931, 116413, 349239, 373747, 645563, 1121241, 1936689, 7101193, 21303579]

約数ペア:

[(1, 21303579), (3, 7101193), (11, 1936689), (19, 1121241), (33, 645563), (57, 373747), (61, 349239), (183, 116413), (209, 101931), (557, 38247), (627, 33977), (671, 31749), (1159, 18381), (1671, 12749), (2013, 10583), (3477, 6127)]