20174457680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{128467}}^1$

素因数の和:128644

約数の個数: 80

約数和(自身を含む): 50848662144

約数和(自身を除く): 30674204464

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 151, 208, 260, 302, 520, 604, 755, 1040, 1208, 1510, 1963, 2416, 3020, 3926, 6040, 7852, 9815, 12080, 15704, 19630, 31408, 39260, 78520, 128467, 157040, 256934, 513868, 642335, 1027736, 1284670, 1670071, 2055472, 2569340, 3340142, 5138680, 6680284, 8350355, 10277360, 13360568, 16700710, 19398517, 26721136, 33401420, 38797034, 66802840, 77594068, 96992585, 133605680, 155188136, 193985170, 252180721, 310376272, 387970340, 504361442, 775940680, 1008722884, 1260903605, 1551881360, 2017445768, 2521807210, 4034891536, 5043614420, 10087228840, 20174457680]

約数ペア:

[(1, 20174457680), (2, 10087228840), (4, 5043614420), (5, 4034891536), (8, 2521807210), (10, 2017445768), (13, 1551881360), (16, 1260903605), (20, 1008722884), (26, 775940680), (40, 504361442), (52, 387970340), (65, 310376272), (80, 252180721), (104, 193985170), (130, 155188136), (151, 133605680), (208, 96992585), (260, 77594068), (302, 66802840), (520, 38797034), (604, 33401420), (755, 26721136), (1040, 19398517), (1208, 16700710), (1510, 13360568), (1963, 10277360), (2416, 8350355), (3020, 6680284), (3926, 5138680), (6040, 3340142), (7852, 2569340), (9815, 2055472), (12080, 1670071), (15704, 1284670), (19630, 1027736), (31408, 642335), (39260, 513868), (78520, 256934), (128467, 157040)]