81198675

素因数分解:

$3^2\times 5^2\times {\mathrm{563}}^1\times {\mathrm{641}}^1$

素因数の和:1220

約数の個数: 36

約数和(自身を含む): 145921464

約数和(自身を除く): 64722789

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 563, 641, 1689, 1923, 2815, 3205, 5067, 5769, 8445, 9615, 14075, 16025, 25335, 28845, 42225, 48075, 126675, 144225, 360883, 1082649, 1804415, 3247947, 5413245, 9022075, 16239735, 27066225, 81198675]

約数ペア:

[(1, 81198675), (3, 27066225), (5, 16239735), (9, 9022075), (15, 5413245), (25, 3247947), (45, 1804415), (75, 1082649), (225, 360883), (563, 144225), (641, 126675), (1689, 48075), (1923, 42225), (2815, 28845), (3205, 25335), (5067, 16025), (5769, 14075), (8445, 9615)]