20667285

素因数分解:

$3^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{5279}}^1$

素因数の和:5322

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 17348715

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 87, 135, 145, 261, 435, 783, 1305, 3915, 5279, 15837, 26395, 47511, 79185, 142533, 153091, 237555, 459273, 712665, 765455, 1377819, 2296365, 4133457, 6889095, 20667285]

約数ペア:

[(1, 20667285), (3, 6889095), (5, 4133457), (9, 2296365), (15, 1377819), (27, 765455), (29, 712665), (45, 459273), (87, 237555), (135, 153091), (145, 142533), (261, 79185), (435, 47511), (783, 26395), (1305, 15837), (3915, 5279)]