213091875

素因数分解:

$3^2\times 5^4\times {\mathrm{43}}^1\times {\mathrm{881}}^1$

素因数の和:950

約数の個数: 60

約数和(自身を含む): 394017624

約数和(自身を除く): 180925749

約数列:

[1, 3, 5, 9, 15, 25, 43, 45, 75, 125, 129, 215, 225, 375, 387, 625, 645, 881, 1075, 1125, 1875, 1935, 2643, 3225, 4405, 5375, 5625, 7929, 9675, 13215, 16125, 22025, 26875, 37883, 39645, 48375, 66075, 80625, 110125, 113649, 189415, 198225, 241875, 330375, 340947, 550625, 568245, 947075, 991125, 1651875, 1704735, 2841225, 4735375, 4955625, 8523675, 14206125, 23676875, 42618375, 71030625, 213091875]

約数ペア:

[(1, 213091875), (3, 71030625), (5, 42618375), (9, 23676875), (15, 14206125), (25, 8523675), (43, 4955625), (45, 4735375), (75, 2841225), (125, 1704735), (129, 1651875), (215, 991125), (225, 947075), (375, 568245), (387, 550625), (625, 340947), (645, 330375), (881, 241875), (1075, 198225), (1125, 189415), (1875, 113649), (1935, 110125), (2643, 80625), (3225, 66075), (4405, 48375), (5375, 39645), (5625, 37883), (7929, 26875), (9675, 22025), (13215, 16125)]