78438220

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{80039}}^1$

素因数の和:80062

約数の個数: 36

約数和(自身を含む): 191615760

約数和(自身を除く): 113177540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 80039, 160078, 320156, 400195, 560273, 800390, 1120546, 1600780, 2241092, 2801365, 3921911, 5602730, 7843822, 11205460, 15687644, 19609555, 39219110, 78438220]

約数ペア:

[(1, 78438220), (2, 39219110), (4, 19609555), (5, 15687644), (7, 11205460), (10, 7843822), (14, 5602730), (20, 3921911), (28, 2801365), (35, 2241092), (49, 1600780), (70, 1120546), (98, 800390), (140, 560273), (196, 400195), (245, 320156), (490, 160078), (980, 80039)]