90890910

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^2$

素因数の和:232

約数の個数: 120

約数和(自身を含む): 269279208

約数和(自身を除く): 178388298

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 45, 54, 55, 66, 81, 90, 99, 101, 110, 135, 162, 165, 198, 202, 270, 297, 303, 330, 405, 495, 505, 594, 606, 810, 891, 909, 990, 1010, 1111, 1485, 1515, 1782, 1818, 2222, 2727, 2970, 3030, 3333, 4455, 4545, 5454, 5555, 6666, 8181, 8910, 9090, 9999, 10201, 11110, 13635, 16362, 16665, 19998, 20402, 27270, 29997, 30603, 33330, 40905, 49995, 51005, 59994, 61206, 81810, 89991, 91809, 99990, 102010, 112211, 149985, 153015, 179982, 183618, 224422, 275427, 299970, 306030, 336633, 449955, 459045, 550854, 561055, 673266, 826281, 899910, 918090, 1009899, 1122110, 1377135, 1652562, 1683165, 2019798, 2754270, 3029697, 3366330, 4131405, 5049495, 6059394, 8262810, 9089091, 10098990, 15148485, 18178182, 30296970, 45445455, 90890910]

約数ペア:

[(1, 90890910), (2, 45445455), (3, 30296970), (5, 18178182), (6, 15148485), (9, 10098990), (10, 9089091), (11, 8262810), (15, 6059394), (18, 5049495), (22, 4131405), (27, 3366330), (30, 3029697), (33, 2754270), (45, 2019798), (54, 1683165), (55, 1652562), (66, 1377135), (81, 1122110), (90, 1009899), (99, 918090), (101, 899910), (110, 826281), (135, 673266), (162, 561055), (165, 550854), (198, 459045), (202, 449955), (270, 336633), (297, 306030), (303, 299970), (330, 275427), (405, 224422), (495, 183618), (505, 179982), (594, 153015), (606, 149985), (810, 112211), (891, 102010), (909, 99990), (990, 91809), (1010, 89991), (1111, 81810), (1485, 61206), (1515, 59994), (1782, 51005), (1818, 49995), (2222, 40905), (2727, 33330), (2970, 30603), (3030, 29997), (3333, 27270), (4455, 20402), (4545, 19998), (5454, 16665), (5555, 16362), (6666, 13635), (8181, 11110), (8910, 10201), (9090, 9999)]