8790980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1289}}^1$

素因数の和:1340

約数の個数: 48

約数和(自身を含む): 20805120

約数和(自身を除く): 12014140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1289, 1364, 1705, 2578, 3410, 5156, 6445, 6820, 12890, 14179, 25780, 28358, 39959, 56716, 70895, 79918, 141790, 159836, 199795, 283580, 399590, 439549, 799180, 879098, 1758196, 2197745, 4395490, 8790980]

約数ペア:

[(1, 8790980), (2, 4395490), (4, 2197745), (5, 1758196), (10, 879098), (11, 799180), (20, 439549), (22, 399590), (31, 283580), (44, 199795), (55, 159836), (62, 141790), (110, 79918), (124, 70895), (155, 56716), (220, 39959), (310, 28358), (341, 25780), (620, 14179), (682, 12890), (1289, 6820), (1364, 6445), (1705, 5156), (2578, 3410)]