64520225

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^3\times {\mathrm{277}}^1$

素因数の和:327

約数の個数: 48

約数和(自身を含む): 100934016

約数和(自身を除く): 36413791

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 121, 175, 275, 277, 385, 605, 847, 1331, 1385, 1925, 1939, 3025, 3047, 4235, 6655, 6925, 9317, 9695, 15235, 21175, 21329, 33275, 33517, 46585, 48475, 76175, 106645, 167585, 232925, 234619, 368687, 533225, 837925, 1173095, 1843435, 2580809, 5865475, 9217175, 12904045, 64520225]

約数ペア:

[(1, 64520225), (5, 12904045), (7, 9217175), (11, 5865475), (25, 2580809), (35, 1843435), (55, 1173095), (77, 837925), (121, 533225), (175, 368687), (275, 234619), (277, 232925), (385, 167585), (605, 106645), (847, 76175), (1331, 48475), (1385, 46585), (1925, 33517), (1939, 33275), (3025, 21329), (3047, 21175), (4235, 15235), (6655, 9695), (6925, 9317)]