20858201

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:273

約数の個数: 32

約数和(自身を含む): 27659520

約数和(自身を除く): 6801319

約数列:

[1, 7, 13, 17, 91, 97, 119, 139, 221, 679, 973, 1261, 1547, 1649, 1807, 2363, 8827, 11543, 12649, 13483, 16541, 21437, 30719, 94381, 150059, 175279, 215033, 229211, 1226953, 1604477, 2979743, 20858201]

約数ペア:

[(1, 20858201), (7, 2979743), (13, 1604477), (17, 1226953), (91, 229211), (97, 215033), (119, 175279), (139, 150059), (221, 94381), (679, 30719), (973, 21437), (1261, 16541), (1547, 13483), (1649, 12649), (1807, 11543), (2363, 8827)]