721868980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{211}}^1\times {\mathrm{3491}}^1$

素因数の和:3725

約数の個数: 72

約数和(自身を含む): 1772287776

約数和(自身を除く): 1050418796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 211, 245, 422, 490, 844, 980, 1055, 1477, 2110, 2954, 3491, 4220, 5908, 6982, 7385, 10339, 13964, 14770, 17455, 20678, 24437, 29540, 34910, 41356, 48874, 51695, 69820, 97748, 103390, 122185, 171059, 206780, 244370, 342118, 488740, 684236, 736601, 855295, 1473202, 1710590, 2946404, 3421180, 3683005, 5156207, 7366010, 10312414, 14732020, 20624828, 25781035, 36093449, 51562070, 72186898, 103124140, 144373796, 180467245, 360934490, 721868980]

約数ペア:

[(1, 721868980), (2, 360934490), (4, 180467245), (5, 144373796), (7, 103124140), (10, 72186898), (14, 51562070), (20, 36093449), (28, 25781035), (35, 20624828), (49, 14732020), (70, 10312414), (98, 7366010), (140, 5156207), (196, 3683005), (211, 3421180), (245, 2946404), (422, 1710590), (490, 1473202), (844, 855295), (980, 736601), (1055, 684236), (1477, 488740), (2110, 342118), (2954, 244370), (3491, 206780), (4220, 171059), (5908, 122185), (6982, 103390), (7385, 97748), (10339, 69820), (13964, 51695), (14770, 48874), (17455, 41356), (20678, 34910), (24437, 29540)]