20894913

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{659}}^1$

素因数の和:949

約数の個数: 24

約数和(自身を含む): 32672640

約数和(自身を除く): 11777727

約数列:

[1, 3, 9, 13, 39, 117, 271, 659, 813, 1977, 2439, 3523, 5931, 8567, 10569, 25701, 31707, 77103, 178589, 535767, 1607301, 2321657, 6964971, 20894913]

約数ペア:

[(1, 20894913), (3, 6964971), (9, 2321657), (13, 1607301), (39, 535767), (117, 178589), (271, 77103), (659, 31707), (813, 25701), (1977, 10569), (2439, 8567), (3523, 5931)]