25218225

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{347}}^1$

素因数の和:399

約数の個数: 72

約数和(自身を含む): 50487840

約数和(自身を除く): 25269615

約数列:

[1, 3, 5, 9, 15, 17, 19, 25, 45, 51, 57, 75, 85, 95, 153, 171, 225, 255, 285, 323, 347, 425, 475, 765, 855, 969, 1041, 1275, 1425, 1615, 1735, 2907, 3123, 3825, 4275, 4845, 5205, 5899, 6593, 8075, 8675, 14535, 15615, 17697, 19779, 24225, 26025, 29495, 32965, 53091, 59337, 72675, 78075, 88485, 98895, 112081, 147475, 164825, 265455, 296685, 336243, 442425, 494475, 560405, 1008729, 1327275, 1483425, 1681215, 2802025, 5043645, 8406075, 25218225]

約数ペア:

[(1, 25218225), (3, 8406075), (5, 5043645), (9, 2802025), (15, 1681215), (17, 1483425), (19, 1327275), (25, 1008729), (45, 560405), (51, 494475), (57, 442425), (75, 336243), (85, 296685), (95, 265455), (153, 164825), (171, 147475), (225, 112081), (255, 98895), (285, 88485), (323, 78075), (347, 72675), (425, 59337), (475, 53091), (765, 32965), (855, 29495), (969, 26025), (1041, 24225), (1275, 19779), (1425, 17697), (1615, 15615), (1735, 14535), (2907, 8675), (3123, 8075), (3825, 6593), (4275, 5899), (4845, 5205)]