27678640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{443}}^1$

素因数の和:538

約数の個数: 80

約数和(自身を含む): 71352576

約数和(自身を除く): 43673936

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 71, 80, 88, 110, 142, 176, 220, 284, 355, 440, 443, 568, 710, 781, 880, 886, 1136, 1420, 1562, 1772, 2215, 2840, 3124, 3544, 3905, 4430, 4873, 5680, 6248, 7088, 7810, 8860, 9746, 12496, 15620, 17720, 19492, 24365, 31240, 31453, 35440, 38984, 48730, 62480, 62906, 77968, 97460, 125812, 157265, 194920, 251624, 314530, 345983, 389840, 503248, 629060, 691966, 1258120, 1383932, 1729915, 2516240, 2767864, 3459830, 5535728, 6919660, 13839320, 27678640]

約数ペア:

[(1, 27678640), (2, 13839320), (4, 6919660), (5, 5535728), (8, 3459830), (10, 2767864), (11, 2516240), (16, 1729915), (20, 1383932), (22, 1258120), (40, 691966), (44, 629060), (55, 503248), (71, 389840), (80, 345983), (88, 314530), (110, 251624), (142, 194920), (176, 157265), (220, 125812), (284, 97460), (355, 77968), (440, 62906), (443, 62480), (568, 48730), (710, 38984), (781, 35440), (880, 31453), (886, 31240), (1136, 24365), (1420, 19492), (1562, 17720), (1772, 15620), (2215, 12496), (2840, 9746), (3124, 8860), (3544, 7810), (3905, 7088), (4430, 6248), (4873, 5680)]