51231440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{49261}}^1$

素因数の和:49287

約数の個数: 40

約数和(自身を含む): 128278248

約数和(自身を除く): 77046808

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 49261, 98522, 197044, 246305, 394088, 492610, 640393, 788176, 985220, 1280786, 1970440, 2561572, 3201965, 3940880, 5123144, 6403930, 10246288, 12807860, 25615720, 51231440]

約数ペア:

[(1, 51231440), (2, 25615720), (4, 12807860), (5, 10246288), (8, 6403930), (10, 5123144), (13, 3940880), (16, 3201965), (20, 2561572), (26, 1970440), (40, 1280786), (52, 985220), (65, 788176), (80, 640393), (104, 492610), (130, 394088), (208, 246305), (260, 197044), (520, 98522), (1040, 49261)]