18209680

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{167}}^1$

素因数の和:256

約数の個数: 80

約数和(自身を含む): 44997120

約数和(自身を除く): 26787440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 47, 58, 80, 94, 116, 145, 167, 188, 232, 235, 290, 334, 376, 464, 470, 580, 668, 752, 835, 940, 1160, 1336, 1363, 1670, 1880, 2320, 2672, 2726, 3340, 3760, 4843, 5452, 6680, 6815, 7849, 9686, 10904, 13360, 13630, 15698, 19372, 21808, 24215, 27260, 31396, 38744, 39245, 48430, 54520, 62792, 77488, 78490, 96860, 109040, 125584, 156980, 193720, 227621, 313960, 387440, 455242, 627920, 910484, 1138105, 1820968, 2276210, 3641936, 4552420, 9104840, 18209680]

約数ペア:

[(1, 18209680), (2, 9104840), (4, 4552420), (5, 3641936), (8, 2276210), (10, 1820968), (16, 1138105), (20, 910484), (29, 627920), (40, 455242), (47, 387440), (58, 313960), (80, 227621), (94, 193720), (116, 156980), (145, 125584), (167, 109040), (188, 96860), (232, 78490), (235, 77488), (290, 62792), (334, 54520), (376, 48430), (464, 39245), (470, 38744), (580, 31396), (668, 27260), (752, 24215), (835, 21808), (940, 19372), (1160, 15698), (1336, 13630), (1363, 13360), (1670, 10904), (1880, 9686), (2320, 7849), (2672, 6815), (2726, 6680), (3340, 5452), (3760, 4843)]