1351420

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{197}}^1$

素因数の和:227

約数の個数: 48

約数和(自身を含む): 3326400

約数和(自身を除く): 1974980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 197, 245, 343, 394, 490, 686, 788, 980, 985, 1372, 1379, 1715, 1970, 2758, 3430, 3940, 5516, 6860, 6895, 9653, 13790, 19306, 27580, 38612, 48265, 67571, 96530, 135142, 193060, 270284, 337855, 675710, 1351420]

約数ペア:

[(1, 1351420), (2, 675710), (4, 337855), (5, 270284), (7, 193060), (10, 135142), (14, 96530), (20, 67571), (28, 48265), (35, 38612), (49, 27580), (70, 19306), (98, 13790), (140, 9653), (196, 6895), (197, 6860), (245, 5516), (343, 3940), (394, 3430), (490, 2758), (686, 1970), (788, 1715), (980, 1379), (985, 1372)]