13415720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 32432400

約数和(自身を除く): 19016680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 109, 136, 170, 181, 218, 340, 362, 436, 545, 680, 724, 872, 905, 1090, 1448, 1810, 1853, 2180, 3077, 3620, 3706, 4360, 6154, 7240, 7412, 9265, 12308, 14824, 15385, 18530, 19729, 24616, 30770, 37060, 39458, 61540, 74120, 78916, 98645, 123080, 157832, 197290, 335393, 394580, 670786, 789160, 1341572, 1676965, 2683144, 3353930, 6707860, 13415720]

約数ペア:

[(1, 13415720), (2, 6707860), (4, 3353930), (5, 2683144), (8, 1676965), (10, 1341572), (17, 789160), (20, 670786), (34, 394580), (40, 335393), (68, 197290), (85, 157832), (109, 123080), (136, 98645), (170, 78916), (181, 74120), (218, 61540), (340, 39458), (362, 37060), (436, 30770), (545, 24616), (680, 19729), (724, 18530), (872, 15385), (905, 14824), (1090, 12308), (1448, 9265), (1810, 7412), (1853, 7240), (2180, 6154), (3077, 4360), (3620, 3706)]