21740720

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{9371}}^1$

素因数の和:9413

約数の個数: 40

約数和(自身を含む): 52295760

約数和(自身を除く): 30555040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 9371, 18742, 37484, 46855, 74968, 93710, 149936, 187420, 271759, 374840, 543518, 749680, 1087036, 1358795, 2174072, 2717590, 4348144, 5435180, 10870360, 21740720]

約数ペア:

[(1, 21740720), (2, 10870360), (4, 5435180), (5, 4348144), (8, 2717590), (10, 2174072), (16, 1358795), (20, 1087036), (29, 749680), (40, 543518), (58, 374840), (80, 271759), (116, 187420), (145, 149936), (232, 93710), (290, 74968), (464, 46855), (580, 37484), (1160, 18742), (2320, 9371)]