21000612380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{10861}}^1$

素因数の和:10956

約数の個数: 144

約数和(自身を含む): 52423314048

約数和(自身を除く): 31422701668

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 47, 55, 68, 85, 94, 110, 121, 170, 187, 188, 220, 235, 242, 340, 374, 470, 484, 517, 605, 748, 799, 935, 940, 1034, 1210, 1598, 1870, 2057, 2068, 2420, 2585, 3196, 3740, 3995, 4114, 5170, 5687, 7990, 8228, 8789, 10285, 10340, 10861, 11374, 15980, 17578, 20570, 21722, 22748, 28435, 35156, 41140, 43444, 43945, 54305, 56870, 87890, 96679, 108610, 113740, 119471, 175780, 184637, 193358, 217220, 238942, 369274, 386716, 477884, 483395, 510467, 597355, 738548, 923185, 966790, 1020934, 1194710, 1314181, 1846370, 1933580, 2031007, 2041868, 2389420, 2552335, 2628362, 3692740, 4062014, 5104670, 5256724, 5615137, 6570905, 8124028, 8677939, 10155035, 10209340, 11230274, 13141810, 17355878, 20310070, 22341077, 22460548, 26283620, 28075685, 34711756, 40620140, 43389695, 44682154, 56151370, 61766507, 86779390, 89364308, 95457329, 111705385, 112302740, 123533014, 173558780, 190914658, 223410770, 247066028, 308832535, 381829316, 446821540, 477286645, 617665070, 954573290, 1050030619, 1235330140, 1909146580, 2100061238, 4200122476, 5250153095, 10500306190, 21000612380]

約数ペア:

[(1, 21000612380), (2, 10500306190), (4, 5250153095), (5, 4200122476), (10, 2100061238), (11, 1909146580), (17, 1235330140), (20, 1050030619), (22, 954573290), (34, 617665070), (44, 477286645), (47, 446821540), (55, 381829316), (68, 308832535), (85, 247066028), (94, 223410770), (110, 190914658), (121, 173558780), (170, 123533014), (187, 112302740), (188, 111705385), (220, 95457329), (235, 89364308), (242, 86779390), (340, 61766507), (374, 56151370), (470, 44682154), (484, 43389695), (517, 40620140), (605, 34711756), (748, 28075685), (799, 26283620), (935, 22460548), (940, 22341077), (1034, 20310070), (1210, 17355878), (1598, 13141810), (1870, 11230274), (2057, 10209340), (2068, 10155035), (2420, 8677939), (2585, 8124028), (3196, 6570905), (3740, 5615137), (3995, 5256724), (4114, 5104670), (5170, 4062014), (5687, 3692740), (7990, 2628362), (8228, 2552335), (8789, 2389420), (10285, 2041868), (10340, 2031007), (10861, 1933580), (11374, 1846370), (15980, 1314181), (17578, 1194710), (20570, 1020934), (21722, 966790), (22748, 923185), (28435, 738548), (35156, 597355), (41140, 510467), (43444, 483395), (43945, 477884), (54305, 386716), (56870, 369274), (87890, 238942), (96679, 217220), (108610, 193358), (113740, 184637), (119471, 175780)]