18790820

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:492

約数の個数: 48

約数和(自身を含む): 41240640

約数和(自身を除く): 22449820

約数列:

[1, 2, 4, 5, 10, 20, 37, 67, 74, 134, 148, 185, 268, 335, 370, 379, 670, 740, 758, 1340, 1516, 1895, 2479, 3790, 4958, 7580, 9916, 12395, 14023, 24790, 25393, 28046, 49580, 50786, 56092, 70115, 101572, 126965, 140230, 253930, 280460, 507860, 939541, 1879082, 3758164, 4697705, 9395410, 18790820]

約数ペア:

[(1, 18790820), (2, 9395410), (4, 4697705), (5, 3758164), (10, 1879082), (20, 939541), (37, 507860), (67, 280460), (74, 253930), (134, 140230), (148, 126965), (185, 101572), (268, 70115), (335, 56092), (370, 50786), (379, 49580), (670, 28046), (740, 25393), (758, 24790), (1340, 14023), (1516, 12395), (1895, 9916), (2479, 7580), (3790, 4958)]