278318590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{16981}}^1$

素因数の和:17148

約数の個数: 32

約数和(自身を含む): 550216800

約数和(自身を除く): 271898210

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 149, 298, 745, 1490, 1639, 3278, 8195, 16390, 16981, 33962, 84905, 169810, 186791, 373582, 933955, 1867910, 2530169, 5060338, 12650845, 25301690, 27831859, 55663718, 139159295, 278318590]

約数ペア:

[(1, 278318590), (2, 139159295), (5, 55663718), (10, 27831859), (11, 25301690), (22, 12650845), (55, 5060338), (110, 2530169), (149, 1867910), (298, 933955), (745, 373582), (1490, 186791), (1639, 169810), (3278, 84905), (8195, 33962), (16390, 16981)]