216420828

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{1387313}}^1$

素因数の和:1387333

約数の個数: 24

約数和(自身を含む): 543827088

約数和(自身を除く): 327406260

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 1387313, 2774626, 4161939, 5549252, 8323878, 16647756, 18035069, 36070138, 54105207, 72140276, 108210414, 216420828]

約数ペア:

[(1, 216420828), (2, 108210414), (3, 72140276), (4, 54105207), (6, 36070138), (12, 18035069), (13, 16647756), (26, 8323878), (39, 5549252), (52, 4161939), (78, 2774626), (156, 1387313)]