878540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 2069760

約数和(自身を除く): 1191220

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 109, 124, 130, 155, 218, 260, 310, 403, 436, 545, 620, 806, 1090, 1417, 1612, 2015, 2180, 2834, 3379, 4030, 5668, 6758, 7085, 8060, 13516, 14170, 16895, 28340, 33790, 43927, 67580, 87854, 175708, 219635, 439270, 878540]

約数ペア:

[(1, 878540), (2, 439270), (4, 219635), (5, 175708), (10, 87854), (13, 67580), (20, 43927), (26, 33790), (31, 28340), (52, 16895), (62, 14170), (65, 13516), (109, 8060), (124, 7085), (130, 6758), (155, 5668), (218, 4030), (260, 3379), (310, 2834), (403, 2180), (436, 2015), (545, 1612), (620, 1417), (806, 1090)]