28906000

素因数分解:

$2^4\times 5^3\times {\mathrm{97}}^1\times {\mathrm{149}}^1$

素因数の和:269

約数の個数: 80

約数和(自身を含む): 71089200

約数和(自身を除く): 42183200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 97, 100, 125, 149, 194, 200, 250, 298, 388, 400, 485, 500, 596, 745, 776, 970, 1000, 1192, 1490, 1552, 1940, 2000, 2384, 2425, 2980, 3725, 3880, 4850, 5960, 7450, 7760, 9700, 11920, 12125, 14453, 14900, 18625, 19400, 24250, 28906, 29800, 37250, 38800, 48500, 57812, 59600, 72265, 74500, 97000, 115624, 144530, 149000, 194000, 231248, 289060, 298000, 361325, 578120, 722650, 1156240, 1445300, 1806625, 2890600, 3613250, 5781200, 7226500, 14453000, 28906000]

約数ペア:

[(1, 28906000), (2, 14453000), (4, 7226500), (5, 5781200), (8, 3613250), (10, 2890600), (16, 1806625), (20, 1445300), (25, 1156240), (40, 722650), (50, 578120), (80, 361325), (97, 298000), (100, 289060), (125, 231248), (149, 194000), (194, 149000), (200, 144530), (250, 115624), (298, 97000), (388, 74500), (400, 72265), (485, 59600), (500, 57812), (596, 48500), (745, 38800), (776, 37250), (970, 29800), (1000, 28906), (1192, 24250), (1490, 19400), (1552, 18625), (1940, 14900), (2000, 14453), (2384, 12125), (2425, 11920), (2980, 9700), (3725, 7760), (3880, 7450), (4850, 5960)]