21246771

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{349}}^1$

素因数の和:595

約数の個数: 32

約数和(自身を含む): 35123200

約数和(自身を除く): 13876429

約数列:

[1, 3, 7, 13, 21, 39, 91, 223, 273, 349, 669, 1047, 1561, 2443, 2899, 4537, 4683, 7329, 8697, 13611, 20293, 31759, 60879, 77827, 95277, 233481, 544789, 1011751, 1634367, 3035253, 7082257, 21246771]

約数ペア:

[(1, 21246771), (3, 7082257), (7, 3035253), (13, 1634367), (21, 1011751), (39, 544789), (91, 233481), (223, 95277), (273, 77827), (349, 60879), (669, 31759), (1047, 20293), (1561, 13611), (2443, 8697), (2899, 7329), (4537, 4683)]