28236520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4177}}^1$

素因数の和:4214

約数の個数: 48

約数和(自身を含む): 68811660

約数和(自身を除く): 40575140

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3380, 4177, 6760, 8354, 16708, 20885, 33416, 41770, 54301, 83540, 108602, 167080, 217204, 271505, 434408, 543010, 705913, 1086020, 1411826, 2172040, 2823652, 3529565, 5647304, 7059130, 14118260, 28236520]

約数ペア:

[(1, 28236520), (2, 14118260), (4, 7059130), (5, 5647304), (8, 3529565), (10, 2823652), (13, 2172040), (20, 1411826), (26, 1086020), (40, 705913), (52, 543010), (65, 434408), (104, 271505), (130, 217204), (169, 167080), (260, 108602), (338, 83540), (520, 54301), (676, 41770), (845, 33416), (1352, 20885), (1690, 16708), (3380, 8354), (4177, 6760)]