21381852

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1\times {\mathrm{373}}^1$

素因数の和:678

約数の個数: 48

約数和(自身を含む): 53155872

約数和(自身を除く): 31774020

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 51, 68, 102, 204, 281, 373, 562, 746, 843, 1119, 1124, 1492, 1686, 2238, 3372, 4476, 4777, 6341, 9554, 12682, 14331, 19023, 19108, 25364, 28662, 38046, 57324, 76092, 104813, 209626, 314439, 419252, 628878, 1257756, 1781821, 3563642, 5345463, 7127284, 10690926, 21381852]

約数ペア:

[(1, 21381852), (2, 10690926), (3, 7127284), (4, 5345463), (6, 3563642), (12, 1781821), (17, 1257756), (34, 628878), (51, 419252), (68, 314439), (102, 209626), (204, 104813), (281, 76092), (373, 57324), (562, 38046), (746, 28662), (843, 25364), (1119, 19108), (1124, 19023), (1492, 14331), (1686, 12682), (2238, 9554), (3372, 6341), (4476, 4777)]