18280400

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{1987}}^1$

素因数の和:2028

約数の個数: 60

約数和(自身を含む): 45851232

約数和(自身を除く): 27570832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 115, 184, 200, 230, 368, 400, 460, 575, 920, 1150, 1840, 1987, 2300, 3974, 4600, 7948, 9200, 9935, 15896, 19870, 31792, 39740, 45701, 49675, 79480, 91402, 99350, 158960, 182804, 198700, 228505, 365608, 397400, 457010, 731216, 794800, 914020, 1142525, 1828040, 2285050, 3656080, 4570100, 9140200, 18280400]

約数ペア:

[(1, 18280400), (2, 9140200), (4, 4570100), (5, 3656080), (8, 2285050), (10, 1828040), (16, 1142525), (20, 914020), (23, 794800), (25, 731216), (40, 457010), (46, 397400), (50, 365608), (80, 228505), (92, 198700), (100, 182804), (115, 158960), (184, 99350), (200, 91402), (230, 79480), (368, 49675), (400, 45701), (460, 39740), (575, 31792), (920, 19870), (1150, 15896), (1840, 9935), (1987, 9200), (2300, 7948), (3974, 4600)]