20664715440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{211}}^1\times {\mathrm{408071}}^1$

素因数の和:408298

約数の個数: 80

約数和(自身を含む): 64364380416

約数和(自身を除く): 43699664976

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 211, 240, 422, 633, 844, 1055, 1266, 1688, 2110, 2532, 3165, 3376, 4220, 5064, 6330, 8440, 10128, 12660, 16880, 25320, 50640, 408071, 816142, 1224213, 1632284, 2040355, 2448426, 3264568, 4080710, 4896852, 6121065, 6529136, 8161420, 9793704, 12242130, 16322840, 19587408, 24484260, 32645680, 48968520, 86102981, 97937040, 172205962, 258308943, 344411924, 430514905, 516617886, 688823848, 861029810, 1033235772, 1291544715, 1377647696, 1722059620, 2066471544, 2583089430, 3444119240, 4132943088, 5166178860, 6888238480, 10332357720, 20664715440]

約数ペア:

[(1, 20664715440), (2, 10332357720), (3, 6888238480), (4, 5166178860), (5, 4132943088), (6, 3444119240), (8, 2583089430), (10, 2066471544), (12, 1722059620), (15, 1377647696), (16, 1291544715), (20, 1033235772), (24, 861029810), (30, 688823848), (40, 516617886), (48, 430514905), (60, 344411924), (80, 258308943), (120, 172205962), (211, 97937040), (240, 86102981), (422, 48968520), (633, 32645680), (844, 24484260), (1055, 19587408), (1266, 16322840), (1688, 12242130), (2110, 9793704), (2532, 8161420), (3165, 6529136), (3376, 6121065), (4220, 4896852), (5064, 4080710), (6330, 3264568), (8440, 2448426), (10128, 2040355), (12660, 1632284), (16880, 1224213), (25320, 816142), (50640, 408071)]