638532225

素因数分解:

$3^2\times 5^2\times {\mathrm{983}}^1\times {\mathrm{2887}}^1$

素因数の和:3886

約数の個数: 36

約数和(自身を含む): 1145242176

約数和(自身を除く): 506709951

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 983, 2887, 2949, 4915, 8661, 8847, 14435, 14745, 24575, 25983, 43305, 44235, 72175, 73725, 129915, 216525, 221175, 649575, 2837921, 8513763, 14189605, 25541289, 42568815, 70948025, 127706445, 212844075, 638532225]

約数ペア:

[(1, 638532225), (3, 212844075), (5, 127706445), (9, 70948025), (15, 42568815), (25, 25541289), (45, 14189605), (75, 8513763), (225, 2837921), (983, 649575), (2887, 221175), (2949, 216525), (4915, 129915), (8661, 73725), (8847, 72175), (14435, 44235), (14745, 43305), (24575, 25983)]