312996980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{1741}}^1$

素因数の和:1940

約数の個数: 48

約数和(自身を含む): 671645520

約数和(自身を除く): 358648540

約数列:

[1, 2, 4, 5, 10, 20, 89, 101, 178, 202, 356, 404, 445, 505, 890, 1010, 1741, 1780, 2020, 3482, 6964, 8705, 8989, 17410, 17978, 34820, 35956, 44945, 89890, 154949, 175841, 179780, 309898, 351682, 619796, 703364, 774745, 879205, 1549490, 1758410, 3098980, 3516820, 15649849, 31299698, 62599396, 78249245, 156498490, 312996980]

約数ペア:

[(1, 312996980), (2, 156498490), (4, 78249245), (5, 62599396), (10, 31299698), (20, 15649849), (89, 3516820), (101, 3098980), (178, 1758410), (202, 1549490), (356, 879205), (404, 774745), (445, 703364), (505, 619796), (890, 351682), (1010, 309898), (1741, 179780), (1780, 175841), (2020, 154949), (3482, 89890), (6964, 44945), (8705, 35956), (8989, 34820), (17410, 17978)]