12281720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{271}}^1$

素因数の和:396

約数の個数: 64

約数和(自身を含む): 30551040

約数和(自身を除く): 18269320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 103, 110, 206, 220, 271, 412, 440, 515, 542, 824, 1030, 1084, 1133, 1355, 2060, 2168, 2266, 2710, 2981, 4120, 4532, 5420, 5665, 5962, 9064, 10840, 11330, 11924, 14905, 22660, 23848, 27913, 29810, 45320, 55826, 59620, 111652, 119240, 139565, 223304, 279130, 307043, 558260, 614086, 1116520, 1228172, 1535215, 2456344, 3070430, 6140860, 12281720]

約数ペア:

[(1, 12281720), (2, 6140860), (4, 3070430), (5, 2456344), (8, 1535215), (10, 1228172), (11, 1116520), (20, 614086), (22, 558260), (40, 307043), (44, 279130), (55, 223304), (88, 139565), (103, 119240), (110, 111652), (206, 59620), (220, 55826), (271, 45320), (412, 29810), (440, 27913), (515, 23848), (542, 22660), (824, 14905), (1030, 11924), (1084, 11330), (1133, 10840), (1355, 9064), (2060, 5962), (2168, 5665), (2266, 5420), (2710, 4532), (2981, 4120)]