21462680

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{569}}^1$

素因数の和:644

約数の個数: 64

約数和(自身を含む): 51710400

約数和(自身を除く): 30247720

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 41, 46, 82, 92, 115, 164, 184, 205, 230, 328, 410, 460, 569, 820, 920, 943, 1138, 1640, 1886, 2276, 2845, 3772, 4552, 4715, 5690, 7544, 9430, 11380, 13087, 18860, 22760, 23329, 26174, 37720, 46658, 52348, 65435, 93316, 104696, 116645, 130870, 186632, 233290, 261740, 466580, 523480, 536567, 933160, 1073134, 2146268, 2682835, 4292536, 5365670, 10731340, 21462680]

約数ペア:

[(1, 21462680), (2, 10731340), (4, 5365670), (5, 4292536), (8, 2682835), (10, 2146268), (20, 1073134), (23, 933160), (40, 536567), (41, 523480), (46, 466580), (82, 261740), (92, 233290), (115, 186632), (164, 130870), (184, 116645), (205, 104696), (230, 93316), (328, 65435), (410, 52348), (460, 46658), (569, 37720), (820, 26174), (920, 23329), (943, 22760), (1138, 18860), (1640, 13087), (1886, 11380), (2276, 9430), (2845, 7544), (3772, 5690), (4552, 4715)]