20059520

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2411}}^1$

素因数の和:2443

約数の個数: 64

約数和(自身を含む): 51665040

約数和(自身を除く): 31605520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 260, 320, 416, 520, 640, 832, 1040, 1664, 2080, 2411, 4160, 4822, 8320, 9644, 12055, 19288, 24110, 31343, 38576, 48220, 62686, 77152, 96440, 125372, 154304, 156715, 192880, 250744, 308608, 313430, 385760, 501488, 626860, 771520, 1002976, 1253720, 1543040, 2005952, 2507440, 4011904, 5014880, 10029760, 20059520]

約数ペア:

[(1, 20059520), (2, 10029760), (4, 5014880), (5, 4011904), (8, 2507440), (10, 2005952), (13, 1543040), (16, 1253720), (20, 1002976), (26, 771520), (32, 626860), (40, 501488), (52, 385760), (64, 313430), (65, 308608), (80, 250744), (104, 192880), (128, 156715), (130, 154304), (160, 125372), (208, 96440), (260, 77152), (320, 62686), (416, 48220), (520, 38576), (640, 31343), (832, 24110), (1040, 19288), (1664, 12055), (2080, 9644), (2411, 8320), (4160, 4822)]