18939140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2777}}^1$

素因数の和:2828

約数の個数: 48

約数和(自身を含む): 44803584

約数和(自身を除く): 25864444

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, 2777, 3410, 5554, 6820, 11108, 13885, 27770, 30547, 55540, 61094, 86087, 122188, 152735, 172174, 305470, 344348, 430435, 610940, 860870, 946957, 1721740, 1893914, 3787828, 4734785, 9469570, 18939140]

約数ペア:

[(1, 18939140), (2, 9469570), (4, 4734785), (5, 3787828), (10, 1893914), (11, 1721740), (20, 946957), (22, 860870), (31, 610940), (44, 430435), (55, 344348), (62, 305470), (110, 172174), (124, 152735), (155, 122188), (220, 86087), (310, 61094), (341, 55540), (620, 30547), (682, 27770), (1364, 13885), (1705, 11108), (2777, 6820), (3410, 5554)]