1999840

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1$

素因数の和:475

約数の個数: 48

約数和(自身を含む): 4898880

約数和(自身を除く): 2899040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 431, 464, 580, 862, 928, 1160, 1724, 2155, 2320, 3448, 4310, 4640, 6896, 8620, 12499, 13792, 17240, 24998, 34480, 49996, 62495, 68960, 99992, 124990, 199984, 249980, 399968, 499960, 999920, 1999840]

約数ペア:

[(1, 1999840), (2, 999920), (4, 499960), (5, 399968), (8, 249980), (10, 199984), (16, 124990), (20, 99992), (29, 68960), (32, 62495), (40, 49996), (58, 34480), (80, 24998), (116, 17240), (145, 13792), (160, 12499), (232, 8620), (290, 6896), (431, 4640), (464, 4310), (580, 3448), (862, 2320), (928, 2155), (1160, 1724)]