18376480

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2671}}^1$

素因数の和:2729

約数の個数: 48

約数和(自身を含む): 44440704

約数和(自身を除く): 26064224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2671, 3440, 5342, 6880, 10684, 13355, 21368, 26710, 42736, 53420, 85472, 106840, 114853, 213680, 229706, 427360, 459412, 574265, 918824, 1148530, 1837648, 2297060, 3675296, 4594120, 9188240, 18376480]

約数ペア:

[(1, 18376480), (2, 9188240), (4, 4594120), (5, 3675296), (8, 2297060), (10, 1837648), (16, 1148530), (20, 918824), (32, 574265), (40, 459412), (43, 427360), (80, 229706), (86, 213680), (160, 114853), (172, 106840), (215, 85472), (344, 53420), (430, 42736), (688, 26710), (860, 21368), (1376, 13355), (1720, 10684), (2671, 6880), (3440, 5342)]