204672020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{457}}^2$

素因数の和:937

約数の個数: 54

約数和(自身を含む): 501080958

約数和(自身を除く): 296408938

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 457, 490, 914, 980, 1828, 2285, 3199, 4570, 6398, 9140, 12796, 15995, 22393, 31990, 44786, 63980, 89572, 111965, 208849, 223930, 417698, 447860, 835396, 1044245, 1461943, 2088490, 2923886, 4176980, 5847772, 7309715, 10233601, 14619430, 20467202, 29238860, 40934404, 51168005, 102336010, 204672020]

約数ペア:

[(1, 204672020), (2, 102336010), (4, 51168005), (5, 40934404), (7, 29238860), (10, 20467202), (14, 14619430), (20, 10233601), (28, 7309715), (35, 5847772), (49, 4176980), (70, 2923886), (98, 2088490), (140, 1461943), (196, 1044245), (245, 835396), (457, 447860), (490, 417698), (914, 223930), (980, 208849), (1828, 111965), (2285, 89572), (3199, 63980), (4570, 44786), (6398, 31990), (9140, 22393), (12796, 15995)]