21524815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{601}}^1$

素因数の和:667

約数の個数: 32

約数和(自身を含む): 30340800

約数和(自身を除く): 8815985

約数列:

[1, 5, 13, 19, 29, 65, 95, 145, 247, 377, 551, 601, 1235, 1885, 2755, 3005, 7163, 7813, 11419, 17429, 35815, 39065, 57095, 87145, 148447, 226577, 331151, 742235, 1132885, 1655755, 4304963, 21524815]

約数ペア:

[(1, 21524815), (5, 4304963), (13, 1655755), (19, 1132885), (29, 742235), (65, 331151), (95, 226577), (145, 148447), (247, 87145), (377, 57095), (551, 39065), (601, 35815), (1235, 17429), (1885, 11419), (2755, 7813), (3005, 7163)]