78817620

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{187661}}^1$

素因数の和:187680

約数の個数: 48

約数和(自身を含む): 252217728

約数和(自身を除く): 173400108

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 187661, 375322, 562983, 750644, 938305, 1125966, 1313627, 1876610, 2251932, 2627254, 2814915, 3753220, 3940881, 5254508, 5629830, 6568135, 7881762, 11259660, 13136270, 15763524, 19704405, 26272540, 39408810, 78817620]

約数ペア:

[(1, 78817620), (2, 39408810), (3, 26272540), (4, 19704405), (5, 15763524), (6, 13136270), (7, 11259660), (10, 7881762), (12, 6568135), (14, 5629830), (15, 5254508), (20, 3940881), (21, 3753220), (28, 2814915), (30, 2627254), (35, 2251932), (42, 1876610), (60, 1313627), (70, 1125966), (84, 938305), (105, 750644), (140, 562983), (210, 375322), (420, 187661)]