20163845

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{563}}^1$

素因数の和:629

約数の個数: 32

約数和(自身を含む): 28425600

約数和(自身を除く): 8261755

約数列:

[1, 5, 13, 19, 29, 65, 95, 145, 247, 377, 551, 563, 1235, 1885, 2755, 2815, 7163, 7319, 10697, 16327, 35815, 36595, 53485, 81635, 139061, 212251, 310213, 695305, 1061255, 1551065, 4032769, 20163845]

約数ペア:

[(1, 20163845), (5, 4032769), (13, 1551065), (19, 1061255), (29, 695305), (65, 310213), (95, 212251), (145, 139061), (247, 81635), (377, 53485), (551, 36595), (563, 35815), (1235, 16327), (1885, 10697), (2755, 7319), (2815, 7163)]