16420820

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{461}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 37488528

約数和(自身を除く): 21067708

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 461, 548, 685, 922, 1370, 1781, 1844, 2305, 2740, 3562, 4610, 5993, 7124, 8905, 9220, 11986, 17810, 23972, 29965, 35620, 59930, 63157, 119860, 126314, 252628, 315785, 631570, 821041, 1263140, 1642082, 3284164, 4105205, 8210410, 16420820]

約数ペア:

[(1, 16420820), (2, 8210410), (4, 4105205), (5, 3284164), (10, 1642082), (13, 1263140), (20, 821041), (26, 631570), (52, 315785), (65, 252628), (130, 126314), (137, 119860), (260, 63157), (274, 59930), (461, 35620), (548, 29965), (685, 23972), (922, 17810), (1370, 11986), (1781, 9220), (1844, 8905), (2305, 7124), (2740, 5993), (3562, 4610)]