20170684821

素因数分解:

$3^1\times 7^2\times {\mathrm{653}}^1\times {\mathrm{210131}}^1$

素因数の和:210801

約数の個数: 24

約数和(自身を含む): 31333202784

約数和(自身を除く): 11162517963

約数列:

[1, 3, 7, 21, 49, 147, 653, 1959, 4571, 13713, 31997, 95991, 210131, 630393, 1470917, 4412751, 10296419, 30889257, 137215543, 411646629, 960508801, 2881526403, 6723561607, 20170684821]

約数ペア:

[(1, 20170684821), (3, 6723561607), (7, 2881526403), (21, 960508801), (49, 411646629), (147, 137215543), (653, 30889257), (1959, 10296419), (4571, 4412751), (13713, 1470917), (31997, 630393), (95991, 210131)]