20837440

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5009}}^1$

素因数の和:5039

約数の個数: 56

約数和(自身を含む): 53446680

約数和(自身を除く): 32609240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 5009, 10018, 20036, 25045, 40072, 50090, 65117, 80144, 100180, 130234, 160288, 200360, 260468, 320576, 325585, 400720, 520936, 651170, 801440, 1041872, 1302340, 1602880, 2083744, 2604680, 4167488, 5209360, 10418720, 20837440]

約数ペア:

[(1, 20837440), (2, 10418720), (4, 5209360), (5, 4167488), (8, 2604680), (10, 2083744), (13, 1602880), (16, 1302340), (20, 1041872), (26, 801440), (32, 651170), (40, 520936), (52, 400720), (64, 325585), (65, 320576), (80, 260468), (104, 200360), (130, 160288), (160, 130234), (208, 100180), (260, 80144), (320, 65117), (416, 50090), (520, 40072), (832, 25045), (1040, 20036), (2080, 10018), (4160, 5009)]