20493496

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{107}}^1\times {\mathrm{269}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 39366000

約数和(自身を除く): 18872504

約数列:

[1, 2, 4, 8, 89, 107, 178, 214, 269, 356, 428, 538, 712, 856, 1076, 2152, 9523, 19046, 23941, 28783, 38092, 47882, 57566, 76184, 95764, 115132, 191528, 230264, 2561687, 5123374, 10246748, 20493496]

約数ペア:

[(1, 20493496), (2, 10246748), (4, 5123374), (8, 2561687), (89, 230264), (107, 191528), (178, 115132), (214, 95764), (269, 76184), (356, 57566), (428, 47882), (538, 38092), (712, 28783), (856, 23941), (1076, 19046), (2152, 9523)]