18757900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{127}}^1\times {\mathrm{211}}^1$

素因数の和:359

約数の個数: 72

約数和(自身を含む): 47108096

約数和(自身を除く): 28350196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 127, 140, 175, 211, 254, 350, 422, 508, 635, 700, 844, 889, 1055, 1270, 1477, 1778, 2110, 2540, 2954, 3175, 3556, 4220, 4445, 5275, 5908, 6350, 7385, 8890, 10550, 12700, 14770, 17780, 21100, 22225, 26797, 29540, 36925, 44450, 53594, 73850, 88900, 107188, 133985, 147700, 187579, 267970, 375158, 535940, 669925, 750316, 937895, 1339850, 1875790, 2679700, 3751580, 4689475, 9378950, 18757900]

約数ペア:

[(1, 18757900), (2, 9378950), (4, 4689475), (5, 3751580), (7, 2679700), (10, 1875790), (14, 1339850), (20, 937895), (25, 750316), (28, 669925), (35, 535940), (50, 375158), (70, 267970), (100, 187579), (127, 147700), (140, 133985), (175, 107188), (211, 88900), (254, 73850), (350, 53594), (422, 44450), (508, 36925), (635, 29540), (700, 26797), (844, 22225), (889, 21100), (1055, 17780), (1270, 14770), (1477, 12700), (1778, 10550), (2110, 8890), (2540, 7385), (2954, 6350), (3175, 5908), (3556, 5275), (4220, 4445)]