87902980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{12889}}^1$

素因数の和:12940

約数の個数: 48

約数和(自身を含む): 207889920

約数和(自身を除く): 119986940

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 3410, 6820, 12889, 25778, 51556, 64445, 128890, 141779, 257780, 283558, 399559, 567116, 708895, 799118, 1417790, 1598236, 1997795, 2835580, 3995590, 4395149, 7991180, 8790298, 17580596, 21975745, 43951490, 87902980]

約数ペア:

[(1, 87902980), (2, 43951490), (4, 21975745), (5, 17580596), (10, 8790298), (11, 7991180), (20, 4395149), (22, 3995590), (31, 2835580), (44, 1997795), (55, 1598236), (62, 1417790), (110, 799118), (124, 708895), (155, 567116), (220, 399559), (310, 283558), (341, 257780), (620, 141779), (682, 128890), (1364, 64445), (1705, 51556), (3410, 25778), (6820, 12889)]