81936680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{292631}}^1$

素因数の和:292649

約数の個数: 32

約数和(自身を含む): 210695040

約数和(自身を除く): 128758360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 292631, 585262, 1170524, 1463155, 2048417, 2341048, 2926310, 4096834, 5852620, 8193668, 10242085, 11705240, 16387336, 20484170, 40968340, 81936680]

約数ペア:

[(1, 81936680), (2, 40968340), (4, 20484170), (5, 16387336), (7, 11705240), (8, 10242085), (10, 8193668), (14, 5852620), (20, 4096834), (28, 2926310), (35, 2341048), (40, 2048417), (56, 1463155), (70, 1170524), (140, 585262), (280, 292631)]