20668010

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:108

約数の個数: 96

約数和(自身を含む): 45964800

約数和(自身を除く): 25296790

約数列:

[1, 2, 5, 10, 11, 19, 22, 29, 31, 38, 55, 58, 62, 95, 110, 121, 145, 155, 190, 209, 242, 290, 310, 319, 341, 418, 551, 589, 605, 638, 682, 899, 1045, 1102, 1178, 1210, 1595, 1705, 1798, 2090, 2299, 2755, 2945, 3190, 3410, 3509, 3751, 4495, 4598, 5510, 5890, 6061, 6479, 7018, 7502, 8990, 9889, 11495, 12122, 12958, 17081, 17545, 18755, 19778, 22990, 30305, 32395, 34162, 35090, 37510, 49445, 60610, 64790, 66671, 71269, 85405, 98890, 108779, 133342, 142538, 170810, 187891, 217558, 333355, 356345, 375782, 543895, 666710, 712690, 939455, 1087790, 1878910, 2066801, 4133602, 10334005, 20668010]

約数ペア:

[(1, 20668010), (2, 10334005), (5, 4133602), (10, 2066801), (11, 1878910), (19, 1087790), (22, 939455), (29, 712690), (31, 666710), (38, 543895), (55, 375782), (58, 356345), (62, 333355), (95, 217558), (110, 187891), (121, 170810), (145, 142538), (155, 133342), (190, 108779), (209, 98890), (242, 85405), (290, 71269), (310, 66671), (319, 64790), (341, 60610), (418, 49445), (551, 37510), (589, 35090), (605, 34162), (638, 32395), (682, 30305), (899, 22990), (1045, 19778), (1102, 18755), (1178, 17545), (1210, 17081), (1595, 12958), (1705, 12122), (1798, 11495), (2090, 9889), (2299, 8990), (2755, 7502), (2945, 7018), (3190, 6479), (3410, 6061), (3509, 5890), (3751, 5510), (4495, 4598)]