2100027980

素因数分解:

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

素因数の和:27578

約数の個数: 48

約数和(自身を含む): 4563488160

約数和(自身を除く): 2463460180

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 89, 172, 178, 215, 356, 430, 445, 860, 890, 1780, 3827, 7654, 15308, 19135, 27437, 38270, 54874, 76540, 109748, 137185, 274370, 548740, 1179791, 2359582, 2441893, 4719164, 4883786, 5898955, 9767572, 11797910, 12209465, 23595820, 24418930, 48837860, 105001399, 210002798, 420005596, 525006995, 1050013990, 2100027980]

約数ペア:

[(1, 2100027980), (2, 1050013990), (4, 525006995), (5, 420005596), (10, 210002798), (20, 105001399), (43, 48837860), (86, 24418930), (89, 23595820), (172, 12209465), (178, 11797910), (215, 9767572), (356, 5898955), (430, 4883786), (445, 4719164), (860, 2441893), (890, 2359582), (1780, 1179791), (3827, 548740), (7654, 274370), (15308, 137185), (19135, 109748), (27437, 76540), (38270, 54874)]