20621315

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{191}}^1$

素因数の和:371

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 8796157

約数列:

[1, 5, 11, 13, 55, 65, 143, 151, 191, 715, 755, 955, 1661, 1963, 2101, 2483, 8305, 9815, 10505, 12415, 21593, 27313, 28841, 107965, 136565, 144205, 317251, 374933, 1586255, 1874665, 4124263, 20621315]

約数ペア:

[(1, 20621315), (5, 4124263), (11, 1874665), (13, 1586255), (55, 374933), (65, 317251), (143, 144205), (151, 136565), (191, 107965), (715, 28841), (755, 27313), (955, 21593), (1661, 12415), (1963, 10505), (2101, 9815), (2483, 8305)]