18291440

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{9941}}^1$

素因数の和:9977

約数の個数: 40

約数和(自身を含む): 44381088

約数和(自身を除く): 26089648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 9941, 19882, 39764, 49705, 79528, 99410, 159056, 198820, 228643, 397640, 457286, 795280, 914572, 1143215, 1829144, 2286430, 3658288, 4572860, 9145720, 18291440]

約数ペア:

[(1, 18291440), (2, 9145720), (4, 4572860), (5, 3658288), (8, 2286430), (10, 1829144), (16, 1143215), (20, 914572), (23, 795280), (40, 457286), (46, 397640), (80, 228643), (92, 198820), (115, 159056), (184, 99410), (230, 79528), (368, 49705), (460, 39764), (920, 19882), (1840, 9941)]