19916000

素因数分解:

$2^5\times 5^3\times {\mathrm{13}}^1\times {\mathrm{383}}^1$

素因数の和:421

約数の個数: 96

約数和(自身を含む): 52835328

約数和(自身を除く): 32919328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 65, 80, 100, 104, 125, 130, 160, 200, 208, 250, 260, 325, 383, 400, 416, 500, 520, 650, 766, 800, 1000, 1040, 1300, 1532, 1625, 1915, 2000, 2080, 2600, 3064, 3250, 3830, 4000, 4979, 5200, 6128, 6500, 7660, 9575, 9958, 10400, 12256, 13000, 15320, 19150, 19916, 24895, 26000, 30640, 38300, 39832, 47875, 49790, 52000, 61280, 76600, 79664, 95750, 99580, 124475, 153200, 159328, 191500, 199160, 248950, 306400, 383000, 398320, 497900, 622375, 766000, 796640, 995800, 1244750, 1532000, 1991600, 2489500, 3983200, 4979000, 9958000, 19916000]

約数ペア:

[(1, 19916000), (2, 9958000), (4, 4979000), (5, 3983200), (8, 2489500), (10, 1991600), (13, 1532000), (16, 1244750), (20, 995800), (25, 796640), (26, 766000), (32, 622375), (40, 497900), (50, 398320), (52, 383000), (65, 306400), (80, 248950), (100, 199160), (104, 191500), (125, 159328), (130, 153200), (160, 124475), (200, 99580), (208, 95750), (250, 79664), (260, 76600), (325, 61280), (383, 52000), (400, 49790), (416, 47875), (500, 39832), (520, 38300), (650, 30640), (766, 26000), (800, 24895), (1000, 19916), (1040, 19150), (1300, 15320), (1532, 13000), (1625, 12256), (1915, 10400), (2000, 9958), (2080, 9575), (2600, 7660), (3064, 6500), (3250, 6128), (3830, 5200), (4000, 4979)]