20456030

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{383}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 43338240

約数和(自身を除く): 22882210

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 109, 218, 245, 383, 490, 545, 763, 766, 1090, 1526, 1915, 2681, 3815, 3830, 5341, 5362, 7630, 10682, 13405, 18767, 26705, 26810, 37534, 41747, 53410, 83494, 93835, 187670, 208735, 292229, 417470, 584458, 1461145, 2045603, 2922290, 4091206, 10228015, 20456030]

約数ペア:

[(1, 20456030), (2, 10228015), (5, 4091206), (7, 2922290), (10, 2045603), (14, 1461145), (35, 584458), (49, 417470), (70, 292229), (98, 208735), (109, 187670), (218, 93835), (245, 83494), (383, 53410), (490, 41747), (545, 37534), (763, 26810), (766, 26705), (1090, 18767), (1526, 13405), (1915, 10682), (2681, 7630), (3815, 5362), (3830, 5341)]