20796664480

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^2\times {\mathrm{70297}}^1$

素因数の和:70398

約数の個数: 72

約数和(自身を含む): 50302015092

約数和(自身を除く): 29505350612

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 1849, 3440, 3698, 6880, 7396, 9245, 14792, 18490, 29584, 36980, 59168, 70297, 73960, 140594, 147920, 281188, 295840, 351485, 562376, 702970, 1124752, 1405940, 2249504, 2811880, 3022771, 5623760, 6045542, 11247520, 12091084, 15113855, 24182168, 30227710, 48364336, 60455420, 96728672, 120910840, 129979153, 241821680, 259958306, 483643360, 519916612, 649895765, 1039833224, 1299791530, 2079666448, 2599583060, 4159332896, 5199166120, 10398332240, 20796664480]

約数ペア:

[(1, 20796664480), (2, 10398332240), (4, 5199166120), (5, 4159332896), (8, 2599583060), (10, 2079666448), (16, 1299791530), (20, 1039833224), (32, 649895765), (40, 519916612), (43, 483643360), (80, 259958306), (86, 241821680), (160, 129979153), (172, 120910840), (215, 96728672), (344, 60455420), (430, 48364336), (688, 30227710), (860, 24182168), (1376, 15113855), (1720, 12091084), (1849, 11247520), (3440, 6045542), (3698, 5623760), (6880, 3022771), (7396, 2811880), (9245, 2249504), (14792, 1405940), (18490, 1124752), (29584, 702970), (36980, 562376), (59168, 351485), (70297, 295840), (73960, 281188), (140594, 147920)]