18712760

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{599}}^1$

素因数の和:692

約数の個数: 64

約数和(自身を含む): 46656000

約数和(自身を除く): 27943240

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 71, 88, 110, 142, 220, 284, 355, 440, 568, 599, 710, 781, 1198, 1420, 1562, 2396, 2840, 2995, 3124, 3905, 4792, 5990, 6248, 6589, 7810, 11980, 13178, 15620, 23960, 26356, 31240, 32945, 42529, 52712, 65890, 85058, 131780, 170116, 212645, 263560, 340232, 425290, 467819, 850580, 935638, 1701160, 1871276, 2339095, 3742552, 4678190, 9356380, 18712760]

約数ペア:

[(1, 18712760), (2, 9356380), (4, 4678190), (5, 3742552), (8, 2339095), (10, 1871276), (11, 1701160), (20, 935638), (22, 850580), (40, 467819), (44, 425290), (55, 340232), (71, 263560), (88, 212645), (110, 170116), (142, 131780), (220, 85058), (284, 65890), (355, 52712), (440, 42529), (568, 32945), (599, 31240), (710, 26356), (781, 23960), (1198, 15620), (1420, 13178), (1562, 11980), (2396, 7810), (2840, 6589), (2995, 6248), (3124, 5990), (3905, 4792)]