220640

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{197}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 598752

約数和(自身を除く): 378112

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 197, 224, 280, 394, 560, 788, 985, 1120, 1379, 1576, 1970, 2758, 3152, 3940, 5516, 6304, 6895, 7880, 11032, 13790, 15760, 22064, 27580, 31520, 44128, 55160, 110320, 220640]

約数ペア:

[(1, 220640), (2, 110320), (4, 55160), (5, 44128), (7, 31520), (8, 27580), (10, 22064), (14, 15760), (16, 13790), (20, 11032), (28, 7880), (32, 6895), (35, 6304), (40, 5516), (56, 3940), (70, 3152), (80, 2758), (112, 1970), (140, 1576), (160, 1379), (197, 1120), (224, 985), (280, 788), (394, 560)]