87511221

素因数分解:

$3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{6229}}^1$

素因数の和:6465

約数の個数: 24

約数和(自身を含む): 145134080

約数和(自身を除く): 57622859

約数列:

[1, 3, 7, 9, 21, 63, 223, 669, 1561, 2007, 4683, 6229, 14049, 18687, 43603, 56061, 130809, 392427, 1389067, 4167201, 9723469, 12501603, 29170407, 87511221]

約数ペア:

[(1, 87511221), (3, 29170407), (7, 12501603), (9, 9723469), (21, 4167201), (63, 1389067), (223, 392427), (669, 130809), (1561, 56061), (2007, 43603), (4683, 18687), (6229, 14049)]