20677725

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{3169}}^1$

素因数の和:3214

約数の個数: 36

約数和(自身を含む): 38325300

約数和(自身を除く): 17647575

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 3169, 6525, 9507, 15845, 28521, 47535, 79225, 91901, 142605, 237675, 275703, 459505, 713025, 827109, 1378515, 2297525, 4135545, 6892575, 20677725]

約数ペア:

[(1, 20677725), (3, 6892575), (5, 4135545), (9, 2297525), (15, 1378515), (25, 827109), (29, 713025), (45, 459505), (75, 275703), (87, 237675), (145, 142605), (225, 91901), (261, 79225), (435, 47535), (725, 28521), (1305, 15845), (2175, 9507), (3169, 6525)]