123557720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{21601}}^1$

素因数の和:21636

約数の個数: 64

約数和(自身を含む): 326622240

約数和(自身を除く): 203064520

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 20, 22, 26, 40, 44, 52, 55, 65, 88, 104, 110, 130, 143, 220, 260, 286, 440, 520, 572, 715, 1144, 1430, 2860, 5720, 21601, 43202, 86404, 108005, 172808, 216010, 237611, 280813, 432020, 475222, 561626, 864040, 950444, 1123252, 1188055, 1404065, 1900888, 2246504, 2376110, 2808130, 3088943, 4752220, 5616260, 6177886, 9504440, 11232520, 12355772, 15444715, 24711544, 30889430, 61778860, 123557720]

約数ペア:

[(1, 123557720), (2, 61778860), (4, 30889430), (5, 24711544), (8, 15444715), (10, 12355772), (11, 11232520), (13, 9504440), (20, 6177886), (22, 5616260), (26, 4752220), (40, 3088943), (44, 2808130), (52, 2376110), (55, 2246504), (65, 1900888), (88, 1404065), (104, 1188055), (110, 1123252), (130, 950444), (143, 864040), (220, 561626), (260, 475222), (286, 432020), (440, 280813), (520, 237611), (572, 216010), (715, 172808), (1144, 108005), (1430, 86404), (2860, 43202), (5720, 21601)]