209997920

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^2\times {\mathrm{10847}}^1$

素因数の和:10884

約数の個数: 72

約数和(自身を含む): 545372352

約数和(自身を除く): 335374432

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 121, 160, 176, 220, 242, 352, 440, 484, 605, 880, 968, 1210, 1760, 1936, 2420, 3872, 4840, 9680, 10847, 19360, 21694, 43388, 54235, 86776, 108470, 119317, 173552, 216940, 238634, 347104, 433880, 477268, 596585, 867760, 954536, 1193170, 1312487, 1735520, 1909072, 2386340, 2624974, 3818144, 4772680, 5249948, 6562435, 9545360, 10499896, 13124870, 19090720, 20999792, 26249740, 41999584, 52499480, 104998960, 209997920]

約数ペア:

[(1, 209997920), (2, 104998960), (4, 52499480), (5, 41999584), (8, 26249740), (10, 20999792), (11, 19090720), (16, 13124870), (20, 10499896), (22, 9545360), (32, 6562435), (40, 5249948), (44, 4772680), (55, 3818144), (80, 2624974), (88, 2386340), (110, 1909072), (121, 1735520), (160, 1312487), (176, 1193170), (220, 954536), (242, 867760), (352, 596585), (440, 477268), (484, 433880), (605, 347104), (880, 238634), (968, 216940), (1210, 173552), (1760, 119317), (1936, 108470), (2420, 86776), (3872, 54235), (4840, 43388), (9680, 21694), (10847, 19360)]