81900645

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{509}}^1\times {\mathrm{631}}^1$

素因数の和:1165

約数の個数: 32

約数和(自身を含む): 139242240

約数和(自身を除く): 57341595

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 509, 631, 1527, 1893, 2545, 3155, 7635, 8653, 9465, 10727, 25959, 32181, 43265, 53635, 129795, 160905, 321179, 963537, 1605895, 4817685, 5460043, 16380129, 27300215, 81900645]

約数ペア:

[(1, 81900645), (3, 27300215), (5, 16380129), (15, 5460043), (17, 4817685), (51, 1605895), (85, 963537), (255, 321179), (509, 160905), (631, 129795), (1527, 53635), (1893, 43265), (2545, 32181), (3155, 25959), (7635, 10727), (8653, 9465)]