21261648

素因数分解:

$2^4\times 3^1\times {\mathrm{439}}^1\times {\mathrm{1009}}^1$

素因数の和:1459

約数の個数: 40

約数和(自身を含む): 55105600

約数和(自身を除く): 33843952

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 439, 878, 1009, 1317, 1756, 2018, 2634, 3027, 3512, 4036, 5268, 6054, 7024, 8072, 10536, 12108, 16144, 21072, 24216, 48432, 442951, 885902, 1328853, 1771804, 2657706, 3543608, 5315412, 7087216, 10630824, 21261648]

約数ペア:

[(1, 21261648), (2, 10630824), (3, 7087216), (4, 5315412), (6, 3543608), (8, 2657706), (12, 1771804), (16, 1328853), (24, 885902), (48, 442951), (439, 48432), (878, 24216), (1009, 21072), (1317, 16144), (1756, 12108), (2018, 10536), (2634, 8072), (3027, 7024), (3512, 6054), (4036, 5268)]