19963840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4799}}^1$

素因数の和:4829

約数の個数: 56

約数和(自身を含む): 51206400

約数和(自身を除く): 31242560

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, 4799, 9598, 19196, 23995, 38392, 47990, 62387, 76784, 95980, 124774, 153568, 191960, 249548, 307136, 311935, 383920, 499096, 623870, 767840, 998192, 1247740, 1535680, 1996384, 2495480, 3992768, 4990960, 9981920, 19963840]

約数ペア:

[(1, 19963840), (2, 9981920), (4, 4990960), (5, 3992768), (8, 2495480), (10, 1996384), (13, 1535680), (16, 1247740), (20, 998192), (26, 767840), (32, 623870), (40, 499096), (52, 383920), (64, 311935), (65, 307136), (80, 249548), (104, 191960), (130, 153568), (160, 124774), (208, 95980), (260, 76784), (320, 62387), (416, 47990), (520, 38392), (832, 23995), (1040, 19196), (2080, 9598), (4160, 4799)]