21500960

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10337}}^1$

素因数の和:10365

約数の個数: 48

約数和(自身を含む): 54708696

約数和(自身を除く): 33207736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10337, 20674, 41348, 51685, 82696, 103370, 134381, 165392, 206740, 268762, 330784, 413480, 537524, 671905, 826960, 1075048, 1343810, 1653920, 2150096, 2687620, 4300192, 5375240, 10750480, 21500960]

約数ペア:

[(1, 21500960), (2, 10750480), (4, 5375240), (5, 4300192), (8, 2687620), (10, 2150096), (13, 1653920), (16, 1343810), (20, 1075048), (26, 826960), (32, 671905), (40, 537524), (52, 413480), (65, 330784), (80, 268762), (104, 206740), (130, 165392), (160, 134381), (208, 103370), (260, 82696), (416, 51685), (520, 41348), (1040, 20674), (2080, 10337)]