18204440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:372

約数の個数: 64

約数和(自身を含む): 43234560

約数和(自身を除く): 25030120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 53, 62, 106, 124, 155, 212, 248, 265, 277, 310, 424, 530, 554, 620, 1060, 1108, 1240, 1385, 1643, 2120, 2216, 2770, 3286, 5540, 6572, 8215, 8587, 11080, 13144, 14681, 16430, 17174, 29362, 32860, 34348, 42935, 58724, 65720, 68696, 73405, 85870, 117448, 146810, 171740, 293620, 343480, 455111, 587240, 910222, 1820444, 2275555, 3640888, 4551110, 9102220, 18204440]

約数ペア:

[(1, 18204440), (2, 9102220), (4, 4551110), (5, 3640888), (8, 2275555), (10, 1820444), (20, 910222), (31, 587240), (40, 455111), (53, 343480), (62, 293620), (106, 171740), (124, 146810), (155, 117448), (212, 85870), (248, 73405), (265, 68696), (277, 65720), (310, 58724), (424, 42935), (530, 34348), (554, 32860), (620, 29362), (1060, 17174), (1108, 16430), (1240, 14681), (1385, 13144), (1643, 11080), (2120, 8587), (2216, 8215), (2770, 6572), (3286, 5540)]