20269580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1301}}^1$

素因数の和:1370

約数の個数: 48

約数和(自身を含む): 45934560

約数和(自身を除く): 25664980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 41, 76, 82, 95, 164, 190, 205, 380, 410, 779, 820, 1301, 1558, 2602, 3116, 3895, 5204, 6505, 7790, 13010, 15580, 24719, 26020, 49438, 53341, 98876, 106682, 123595, 213364, 247190, 266705, 494380, 533410, 1013479, 1066820, 2026958, 4053916, 5067395, 10134790, 20269580]

約数ペア:

[(1, 20269580), (2, 10134790), (4, 5067395), (5, 4053916), (10, 2026958), (19, 1066820), (20, 1013479), (38, 533410), (41, 494380), (76, 266705), (82, 247190), (95, 213364), (164, 123595), (190, 106682), (205, 98876), (380, 53341), (410, 49438), (779, 26020), (820, 24719), (1301, 15580), (1558, 13010), (2602, 7790), (3116, 6505), (3895, 5204)]