820512856780

素因数分解:

$2^2\times 5^1\times {\mathrm{137}}^1\times {\mathrm{157}}^1\times {\mathrm{1907371}}^1$

素因数の和:1907674

約数の個数: 48

約数和(自身を含む): 1746710241696

約数和(自身を除く): 926197384916

約数列:

[1, 2, 4, 5, 10, 20, 137, 157, 274, 314, 548, 628, 685, 785, 1370, 1570, 2740, 3140, 21509, 43018, 86036, 107545, 215090, 430180, 1907371, 3814742, 7629484, 9536855, 19073710, 38147420, 261309827, 299457247, 522619654, 598914494, 1045239308, 1197828988, 1306549135, 1497286235, 2613098270, 2994572470, 5226196540, 5989144940, 41025642839, 82051285678, 164102571356, 205128214195, 410256428390, 820512856780]

約数ペア:

[(1, 820512856780), (2, 410256428390), (4, 205128214195), (5, 164102571356), (10, 82051285678), (20, 41025642839), (137, 5989144940), (157, 5226196540), (274, 2994572470), (314, 2613098270), (548, 1497286235), (628, 1306549135), (685, 1197828988), (785, 1045239308), (1370, 598914494), (1570, 522619654), (2740, 299457247), (3140, 261309827), (21509, 38147420), (43018, 19073710), (86036, 9536855), (107545, 7629484), (215090, 3814742), (430180, 1907371)]