123406640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{220369}}^1$

素因数の和:220389

約数の個数: 40

約数和(自身を含む): 327910560

約数和(自身を除く): 204503920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 220369, 440738, 881476, 1101845, 1542583, 1762952, 2203690, 3085166, 3525904, 4407380, 6170332, 7712915, 8814760, 12340664, 15425830, 17629520, 24681328, 30851660, 61703320, 123406640]

約数ペア:

[(1, 123406640), (2, 61703320), (4, 30851660), (5, 24681328), (7, 17629520), (8, 15425830), (10, 12340664), (14, 8814760), (16, 7712915), (20, 6170332), (28, 4407380), (35, 3525904), (40, 3085166), (56, 2203690), (70, 1762952), (80, 1542583), (112, 1101845), (140, 881476), (280, 440738), (560, 220369)]