20091100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6481}}^1$

素因数の和:6526

約数の個数: 36

約数和(自身を含む): 45011008

約数和(自身を除く): 24919908

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 155, 310, 620, 775, 1550, 3100, 6481, 12962, 25924, 32405, 64810, 129620, 162025, 200911, 324050, 401822, 648100, 803644, 1004555, 2009110, 4018220, 5022775, 10045550, 20091100]

約数ペア:

[(1, 20091100), (2, 10045550), (4, 5022775), (5, 4018220), (10, 2009110), (20, 1004555), (25, 803644), (31, 648100), (50, 401822), (62, 324050), (100, 200911), (124, 162025), (155, 129620), (310, 64810), (620, 32405), (775, 25924), (1550, 12962), (3100, 6481)]