78712420

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{74257}}^1$

素因数の和:74319

約数の個数: 24

約数和(自身を含む): 168417144

約数和(自身を除く): 89704724

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 74257, 148514, 297028, 371285, 742570, 1485140, 3935621, 7871242, 15742484, 19678105, 39356210, 78712420]

約数ペア:

[(1, 78712420), (2, 39356210), (4, 19678105), (5, 15742484), (10, 7871242), (20, 3935621), (53, 1485140), (106, 742570), (212, 371285), (265, 297028), (530, 148514), (1060, 74257)]