20184320

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1213}}^1$

素因数の和:1247

約数の個数: 72

約数和(自身を含む): 52109736

約数和(自身を除く): 31925416

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1213, 1280, 1664, 2080, 2426, 3328, 4160, 4852, 6065, 8320, 9704, 12130, 15769, 16640, 19408, 24260, 31538, 38816, 48520, 63076, 77632, 78845, 97040, 126152, 155264, 157690, 194080, 252304, 310528, 315380, 388160, 504608, 630760, 776320, 1009216, 1261520, 1552640, 2018432, 2523040, 4036864, 5046080, 10092160, 20184320]

約数ペア:

[(1, 20184320), (2, 10092160), (4, 5046080), (5, 4036864), (8, 2523040), (10, 2018432), (13, 1552640), (16, 1261520), (20, 1009216), (26, 776320), (32, 630760), (40, 504608), (52, 388160), (64, 315380), (65, 310528), (80, 252304), (104, 194080), (128, 157690), (130, 155264), (160, 126152), (208, 97040), (256, 78845), (260, 77632), (320, 63076), (416, 48520), (520, 38816), (640, 31538), (832, 24260), (1040, 19408), (1213, 16640), (1280, 15769), (1664, 12130), (2080, 9704), (2426, 8320), (3328, 6065), (4160, 4852)]