81252225

素因数分解:

$3^2\times 5^2\times {\mathrm{331}}^1\times {\mathrm{1091}}^1$

素因数の和:1438

約数の個数: 36

約数和(自身を含む): 146105232

約数和(自身を除く): 64853007

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 331, 993, 1091, 1655, 2979, 3273, 4965, 5455, 8275, 9819, 14895, 16365, 24825, 27275, 49095, 74475, 81825, 245475, 361121, 1083363, 1805605, 3250089, 5416815, 9028025, 16250445, 27084075, 81252225]

約数ペア:

[(1, 81252225), (3, 27084075), (5, 16250445), (9, 9028025), (15, 5416815), (25, 3250089), (45, 1805605), (75, 1083363), (225, 361121), (331, 245475), (993, 81825), (1091, 74475), (1655, 49095), (2979, 27275), (3273, 24825), (4965, 16365), (5455, 14895), (8275, 9819)]