20858873.000000000

素因数分解:

$2^3\times 7^1\times {\mathrm{761}}^1\times {\mathrm{3209}}^1$

素因数の和:3983

約数の個数: 32

約数和(自身を含む): 293522400

約数和(自身を除く): 156767656

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 761, 1522, 3044, 3209, 5327, 6088, 6418, 10654, 12836, 21308, 22463, 25672, 42616, 44926, 89852, 179704, 2442049, 4884098, 9768196, 17094343, 19536392, 34188686, 68377372, 136754744]

約数ペア:

[(1, 136754744), (2, 68377372), (4, 34188686), (7, 19536392), (8, 17094343), (14, 9768196), (28, 4884098), (56, 2442049), (761, 179704), (1522, 89852), (3044, 44926), (3209, 42616), (5327, 25672), (6088, 22463), (6418, 21308), (10654, 12836)]