18645880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1367}}^1$

素因数の和:1420

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 28632200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1367, 1705, 2728, 2734, 3410, 5468, 6820, 6835, 10936, 13640, 13670, 15037, 27340, 30074, 42377, 54680, 60148, 75185, 84754, 120296, 150370, 169508, 211885, 300740, 339016, 423770, 466147, 601480, 847540, 932294, 1695080, 1864588, 2330735, 3729176, 4661470, 9322940, 18645880]

約数ペア:

[(1, 18645880), (2, 9322940), (4, 4661470), (5, 3729176), (8, 2330735), (10, 1864588), (11, 1695080), (20, 932294), (22, 847540), (31, 601480), (40, 466147), (44, 423770), (55, 339016), (62, 300740), (88, 211885), (110, 169508), (124, 150370), (155, 120296), (220, 84754), (248, 75185), (310, 60148), (341, 54680), (440, 42377), (620, 30074), (682, 27340), (1240, 15037), (1364, 13670), (1367, 13640), (1705, 10936), (2728, 6835), (2734, 6820), (3410, 5468)]