259420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 665280

約数和(自身を除く): 405860

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 109, 119, 140, 170, 218, 238, 340, 436, 476, 545, 595, 763, 1090, 1190, 1526, 1853, 2180, 2380, 3052, 3706, 3815, 7412, 7630, 9265, 12971, 15260, 18530, 25942, 37060, 51884, 64855, 129710, 259420]

約数ペア:

[(1, 259420), (2, 129710), (4, 64855), (5, 51884), (7, 37060), (10, 25942), (14, 18530), (17, 15260), (20, 12971), (28, 9265), (34, 7630), (35, 7412), (68, 3815), (70, 3706), (85, 3052), (109, 2380), (119, 2180), (140, 1853), (170, 1526), (218, 1190), (238, 1090), (340, 763), (436, 595), (476, 545)]