21551607

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1\times {\mathrm{227}}^1$

素因数の和:388

約数の個数: 48

約数和(自身を含む): 39267072

約数和(自身を除く): 17715465

約数列:

[1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 137, 227, 231, 411, 681, 693, 959, 1233, 1507, 1589, 2043, 2497, 2877, 4521, 4767, 7491, 8631, 10549, 13563, 14301, 17479, 22473, 31099, 31647, 52437, 93297, 94941, 157311, 217693, 279891, 342089, 653079, 1026267, 1959237, 2394623, 3078801, 7183869, 21551607]

約数ペア:

[(1, 21551607), (3, 7183869), (7, 3078801), (9, 2394623), (11, 1959237), (21, 1026267), (33, 653079), (63, 342089), (77, 279891), (99, 217693), (137, 157311), (227, 94941), (231, 93297), (411, 52437), (681, 31647), (693, 31099), (959, 22473), (1233, 17479), (1507, 14301), (1589, 13563), (2043, 10549), (2497, 8631), (2877, 7491), (4521, 4767)]