87357940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{647}}^1$

素因数の和:856

約数の個数: 48

約数和(自身を含む): 189205632

約数和(自身を除く): 101847692

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 157, 172, 215, 314, 430, 628, 647, 785, 860, 1294, 1570, 2588, 3140, 3235, 6470, 6751, 12940, 13502, 27004, 27821, 33755, 55642, 67510, 101579, 111284, 135020, 139105, 203158, 278210, 406316, 507895, 556420, 1015790, 2031580, 4367897, 8735794, 17471588, 21839485, 43678970, 87357940]

約数ペア:

[(1, 87357940), (2, 43678970), (4, 21839485), (5, 17471588), (10, 8735794), (20, 4367897), (43, 2031580), (86, 1015790), (157, 556420), (172, 507895), (215, 406316), (314, 278210), (430, 203158), (628, 139105), (647, 135020), (785, 111284), (860, 101579), (1294, 67510), (1570, 55642), (2588, 33755), (3140, 27821), (3235, 27004), (6470, 13502), (6751, 12940)]