281564660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{4729}}^1$

素因数の和:4980

約数の個数: 48

約数和(自身を含む): 639685200

約数和(自身を除く): 358120540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 229, 260, 458, 916, 1145, 2290, 2977, 4580, 4729, 5954, 9458, 11908, 14885, 18916, 23645, 29770, 47290, 59540, 61477, 94580, 122954, 245908, 307385, 614770, 1082941, 1229540, 2165882, 4331764, 5414705, 10829410, 14078233, 21658820, 28156466, 56312932, 70391165, 140782330, 281564660]

約数ペア:

[(1, 281564660), (2, 140782330), (4, 70391165), (5, 56312932), (10, 28156466), (13, 21658820), (20, 14078233), (26, 10829410), (52, 5414705), (65, 4331764), (130, 2165882), (229, 1229540), (260, 1082941), (458, 614770), (916, 307385), (1145, 245908), (2290, 122954), (2977, 94580), (4580, 61477), (4729, 59540), (5954, 47290), (9458, 29770), (11908, 23645), (14885, 18916)]