21561064

素因数分解:

$2^3\times 7^1\times {\mathrm{521}}^1\times {\mathrm{739}}^1$

素因数の和:1273

約数の個数: 32

約数和(自身を含む): 46353600

約数和(自身を除く): 24792536

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 521, 739, 1042, 1478, 2084, 2956, 3647, 4168, 5173, 5912, 7294, 10346, 14588, 20692, 29176, 41384, 385019, 770038, 1540076, 2695133, 3080152, 5390266, 10780532, 21561064]

約数ペア:

[(1, 21561064), (2, 10780532), (4, 5390266), (7, 3080152), (8, 2695133), (14, 1540076), (28, 770038), (56, 385019), (521, 41384), (739, 29176), (1042, 20692), (1478, 14588), (2084, 10346), (2956, 7294), (3647, 5912), (4168, 5173)]