645508990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{103613}}^1$

素因数の和:103716

約数の個数: 32

約数和(自身を含む): 1342837440

約数和(自身を除く): 697328450

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 89, 178, 445, 623, 890, 1246, 3115, 6230, 103613, 207226, 518065, 725291, 1036130, 1450582, 3626455, 7252910, 9221557, 18443114, 46107785, 64550899, 92215570, 129101798, 322754495, 645508990]

約数ペア:

[(1, 645508990), (2, 322754495), (5, 129101798), (7, 92215570), (10, 64550899), (14, 46107785), (35, 18443114), (70, 9221557), (89, 7252910), (178, 3626455), (445, 1450582), (623, 1036130), (890, 725291), (1246, 518065), (3115, 207226), (6230, 103613)]