21522228

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19709}}^1$

素因数の和:19736

約数の個数: 48

約数和(自身を含む): 61810560

約数和(自身を除く): 40288332

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 156, 182, 273, 364, 546, 1092, 19709, 39418, 59127, 78836, 118254, 137963, 236508, 256217, 275926, 413889, 512434, 551852, 768651, 827778, 1024868, 1537302, 1655556, 1793519, 3074604, 3587038, 5380557, 7174076, 10761114, 21522228]

約数ペア:

[(1, 21522228), (2, 10761114), (3, 7174076), (4, 5380557), (6, 3587038), (7, 3074604), (12, 1793519), (13, 1655556), (14, 1537302), (21, 1024868), (26, 827778), (28, 768651), (39, 551852), (42, 512434), (52, 413889), (78, 275926), (84, 256217), (91, 236508), (156, 137963), (182, 118254), (273, 78836), (364, 59127), (546, 39418), (1092, 19709)]