20013565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1217}}^1$

素因数の和:1269

約数の個数: 32

約数和(自身を含む): 29465856

約数和(自身を除く): 9452291

約数列:

[1, 5, 11, 13, 23, 55, 65, 115, 143, 253, 299, 715, 1217, 1265, 1495, 3289, 6085, 13387, 15821, 16445, 27991, 66935, 79105, 139955, 174031, 307901, 363883, 870155, 1539505, 1819415, 4002713, 20013565]

約数ペア:

[(1, 20013565), (5, 4002713), (11, 1819415), (13, 1539505), (23, 870155), (55, 363883), (65, 307901), (115, 174031), (143, 139955), (253, 79105), (299, 66935), (715, 27991), (1217, 16445), (1265, 15821), (1495, 13387), (3289, 6085)]