255242840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{4787}}^1$

素因数の和:4872

約数の個数: 64

約数和(自身を含む): 606735360

約数和(自身を除く): 351492520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 620, 860, 1240, 1333, 1720, 2666, 4787, 5332, 6665, 9574, 10664, 13330, 19148, 23935, 26660, 38296, 47870, 53320, 95740, 148397, 191480, 205841, 296794, 411682, 593588, 741985, 823364, 1029205, 1187176, 1483970, 1646728, 2058410, 2967940, 4116820, 5935880, 6381071, 8233640, 12762142, 25524284, 31905355, 51048568, 63810710, 127621420, 255242840]

約数ペア:

[(1, 255242840), (2, 127621420), (4, 63810710), (5, 51048568), (8, 31905355), (10, 25524284), (20, 12762142), (31, 8233640), (40, 6381071), (43, 5935880), (62, 4116820), (86, 2967940), (124, 2058410), (155, 1646728), (172, 1483970), (215, 1187176), (248, 1029205), (310, 823364), (344, 741985), (430, 593588), (620, 411682), (860, 296794), (1240, 205841), (1333, 191480), (1720, 148397), (2666, 95740), (4787, 53320), (5332, 47870), (6665, 38296), (9574, 26660), (10664, 23935), (13330, 19148)]