20923600

素因数分解:

$2^4\times 5^2\times {\mathrm{17}}^2\times {\mathrm{181}}^1$

素因数の和:233

約数の個数: 90

約数和(自身を含む): 53694914

約数和(自身を除く): 32771314

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 34, 40, 50, 68, 80, 85, 100, 136, 170, 181, 200, 272, 289, 340, 362, 400, 425, 578, 680, 724, 850, 905, 1156, 1360, 1445, 1448, 1700, 1810, 2312, 2890, 2896, 3077, 3400, 3620, 4525, 4624, 5780, 6154, 6800, 7225, 7240, 9050, 11560, 12308, 14450, 14480, 15385, 18100, 23120, 24616, 28900, 30770, 36200, 49232, 52309, 57800, 61540, 72400, 76925, 104618, 115600, 123080, 153850, 209236, 246160, 261545, 307700, 418472, 523090, 615400, 836944, 1046180, 1230800, 1307725, 2092360, 2615450, 4184720, 5230900, 10461800, 20923600]

約数ペア:

[(1, 20923600), (2, 10461800), (4, 5230900), (5, 4184720), (8, 2615450), (10, 2092360), (16, 1307725), (17, 1230800), (20, 1046180), (25, 836944), (34, 615400), (40, 523090), (50, 418472), (68, 307700), (80, 261545), (85, 246160), (100, 209236), (136, 153850), (170, 123080), (181, 115600), (200, 104618), (272, 76925), (289, 72400), (340, 61540), (362, 57800), (400, 52309), (425, 49232), (578, 36200), (680, 30770), (724, 28900), (850, 24616), (905, 23120), (1156, 18100), (1360, 15385), (1445, 14480), (1448, 14450), (1700, 12308), (1810, 11560), (2312, 9050), (2890, 7240), (2896, 7225), (3077, 6800), (3400, 6154), (3620, 5780), (4525, 4624)]