18884528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{557}}^1$

素因数の和:741

約数の個数: 40

約数和(自身を含む): 39716208

約数和(自身を除く): 20831680

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 163, 208, 326, 557, 652, 1114, 1304, 2119, 2228, 2608, 4238, 4456, 7241, 8476, 8912, 14482, 16952, 28964, 33904, 57928, 90791, 115856, 181582, 363164, 726328, 1180283, 1452656, 2360566, 4721132, 9442264, 18884528]

約数ペア:

[(1, 18884528), (2, 9442264), (4, 4721132), (8, 2360566), (13, 1452656), (16, 1180283), (26, 726328), (52, 363164), (104, 181582), (163, 115856), (208, 90791), (326, 57928), (557, 33904), (652, 28964), (1114, 16952), (1304, 14482), (2119, 8912), (2228, 8476), (2608, 7241), (4238, 4456)]