20970295900

素因数分解:

$2^2\times 5^2\times {\mathrm{43}}^1\times {\mathrm{863}}^1\times {\mathrm{5651}}^1$

素因数の和:6571

約数の個数: 72

約数和(自身を含む): 46626015744

約数和(自身を除く): 25655719844

約数列:

[1, 2, 4, 5, 10, 20, 25, 43, 50, 86, 100, 172, 215, 430, 860, 863, 1075, 1726, 2150, 3452, 4300, 4315, 5651, 8630, 11302, 17260, 21575, 22604, 28255, 37109, 43150, 56510, 74218, 86300, 113020, 141275, 148436, 185545, 242993, 282550, 371090, 485986, 565100, 742180, 927725, 971972, 1214965, 1855450, 2429930, 3710900, 4859860, 4876813, 6074825, 9753626, 12149650, 19507252, 24299300, 24384065, 48768130, 97536260, 121920325, 209702959, 243840650, 419405918, 487681300, 838811836, 1048514795, 2097029590, 4194059180, 5242573975, 10485147950, 20970295900]

約数ペア:

[(1, 20970295900), (2, 10485147950), (4, 5242573975), (5, 4194059180), (10, 2097029590), (20, 1048514795), (25, 838811836), (43, 487681300), (50, 419405918), (86, 243840650), (100, 209702959), (172, 121920325), (215, 97536260), (430, 48768130), (860, 24384065), (863, 24299300), (1075, 19507252), (1726, 12149650), (2150, 9753626), (3452, 6074825), (4300, 4876813), (4315, 4859860), (5651, 3710900), (8630, 2429930), (11302, 1855450), (17260, 1214965), (21575, 971972), (22604, 927725), (28255, 742180), (37109, 565100), (43150, 485986), (56510, 371090), (74218, 282550), (86300, 242993), (113020, 185545), (141275, 148436)]