20682690

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{661}}^1$

素因数の和:827

約数の個数: 64

約数和(自身を含む): 57196800

約数和(自身を除く): 36514110

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 149, 210, 298, 447, 661, 745, 894, 1043, 1322, 1490, 1983, 2086, 2235, 3129, 3305, 3966, 4470, 4627, 5215, 6258, 6610, 9254, 9915, 10430, 13881, 15645, 19830, 23135, 27762, 31290, 46270, 69405, 98489, 138810, 196978, 295467, 492445, 590934, 689423, 984890, 1378846, 1477335, 2068269, 2954670, 3447115, 4136538, 6894230, 10341345, 20682690]

約数ペア:

[(1, 20682690), (2, 10341345), (3, 6894230), (5, 4136538), (6, 3447115), (7, 2954670), (10, 2068269), (14, 1477335), (15, 1378846), (21, 984890), (30, 689423), (35, 590934), (42, 492445), (70, 295467), (105, 196978), (149, 138810), (210, 98489), (298, 69405), (447, 46270), (661, 31290), (745, 27762), (894, 23135), (1043, 19830), (1322, 15645), (1490, 13881), (1983, 10430), (2086, 9915), (2235, 9254), (3129, 6610), (3305, 6258), (3966, 5215), (4470, 4627)]