28127655

素因数分解:

$3^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{349}}^1$

素因数の和:565

約数の個数: 40

約数和(自身を含む): 50820000

約数和(自身を除く): 22692345

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 199, 349, 405, 597, 995, 1047, 1745, 1791, 2985, 3141, 5235, 5373, 8955, 9423, 15705, 16119, 26865, 28269, 47115, 69451, 80595, 141345, 208353, 347255, 625059, 1041765, 1875177, 3125295, 5625531, 9375885, 28127655]

約数ペア:

[(1, 28127655), (3, 9375885), (5, 5625531), (9, 3125295), (15, 1875177), (27, 1041765), (45, 625059), (81, 347255), (135, 208353), (199, 141345), (349, 80595), (405, 69451), (597, 47115), (995, 28269), (1047, 26865), (1745, 16119), (1791, 15705), (2985, 9423), (3141, 8955), (5235, 5373)]