21000948980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{751}}^1\times {\mathrm{7477}}^1$

素因数の和:8265

約数の個数: 96

約数和(自身を含む): 51015992832

約数和(自身を除く): 30015043852

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 340, 374, 748, 751, 935, 1502, 1870, 3004, 3740, 3755, 7477, 7510, 8261, 12767, 14954, 15020, 16522, 25534, 29908, 33044, 37385, 41305, 51068, 63835, 74770, 82247, 82610, 127109, 127670, 140437, 149540, 164494, 165220, 254218, 255340, 280874, 328988, 411235, 508436, 561748, 635545, 702185, 822470, 1271090, 1398199, 1404370, 1644940, 2542180, 2796398, 2808740, 5592796, 5615227, 6990995, 11230454, 13981990, 22460908, 27963980, 28076135, 56152270, 61767497, 95458859, 112304540, 123534994, 190917718, 247069988, 308837485, 381835436, 477294295, 617674970, 954588590, 1050047449, 1235349940, 1909177180, 2100094898, 4200189796, 5250237245, 10500474490, 21000948980]

約数ペア:

[(1, 21000948980), (2, 10500474490), (4, 5250237245), (5, 4200189796), (10, 2100094898), (11, 1909177180), (17, 1235349940), (20, 1050047449), (22, 954588590), (34, 617674970), (44, 477294295), (55, 381835436), (68, 308837485), (85, 247069988), (110, 190917718), (170, 123534994), (187, 112304540), (220, 95458859), (340, 61767497), (374, 56152270), (748, 28076135), (751, 27963980), (935, 22460908), (1502, 13981990), (1870, 11230454), (3004, 6990995), (3740, 5615227), (3755, 5592796), (7477, 2808740), (7510, 2796398), (8261, 2542180), (12767, 1644940), (14954, 1404370), (15020, 1398199), (16522, 1271090), (25534, 822470), (29908, 702185), (33044, 635545), (37385, 561748), (41305, 508436), (51068, 411235), (63835, 328988), (74770, 280874), (82247, 255340), (82610, 254218), (127109, 165220), (127670, 164494), (140437, 149540)]