999920

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{431}}^1$

素因数の和:473

約数の個数: 40

約数和(自身を含む): 2410560

約数和(自身を除く): 1410640

約数列:

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

約数ペア:

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