21000279800

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{27437}}^1$

素因数の和:27585

約数の個数: 96

約数和(自身を含む): 50524333200

約数和(自身を除く): 29524053400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 89, 100, 172, 178, 200, 215, 344, 356, 430, 445, 712, 860, 890, 1075, 1720, 1780, 2150, 2225, 3560, 3827, 4300, 4450, 7654, 8600, 8900, 15308, 17800, 19135, 27437, 30616, 38270, 54874, 76540, 95675, 109748, 137185, 153080, 191350, 219496, 274370, 382700, 548740, 685925, 765400, 1097480, 1179791, 1371850, 2359582, 2441893, 2743700, 4719164, 4883786, 5487400, 5898955, 9438328, 9767572, 11797910, 12209465, 19535144, 23595820, 24418930, 29494775, 47191640, 48837860, 58989550, 61047325, 97675720, 105001399, 117979100, 122094650, 210002798, 235958200, 244189300, 420005596, 488378600, 525006995, 840011192, 1050013990, 2100027980, 2625034975, 4200055960, 5250069950, 10500139900, 21000279800]

約数ペア:

[(1, 21000279800), (2, 10500139900), (4, 5250069950), (5, 4200055960), (8, 2625034975), (10, 2100027980), (20, 1050013990), (25, 840011192), (40, 525006995), (43, 488378600), (50, 420005596), (86, 244189300), (89, 235958200), (100, 210002798), (172, 122094650), (178, 117979100), (200, 105001399), (215, 97675720), (344, 61047325), (356, 58989550), (430, 48837860), (445, 47191640), (712, 29494775), (860, 24418930), (890, 23595820), (1075, 19535144), (1720, 12209465), (1780, 11797910), (2150, 9767572), (2225, 9438328), (3560, 5898955), (3827, 5487400), (4300, 4883786), (4450, 4719164), (7654, 2743700), (8600, 2441893), (8900, 2359582), (15308, 1371850), (17800, 1179791), (19135, 1097480), (27437, 765400), (30616, 685925), (38270, 548740), (54874, 382700), (76540, 274370), (95675, 219496), (109748, 191350), (137185, 153080)]