21781186280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77789951}}^1$

素因数の和:77789969

約数の個数: 32

約数和(自身を含む): 56008765440

約数和(自身を除く): 34227579160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77789951, 155579902, 311159804, 388949755, 544529657, 622319608, 777899510, 1089059314, 1555799020, 2178118628, 2722648285, 3111598040, 4356237256, 5445296570, 10890593140, 21781186280]

約数ペア:

[(1, 21781186280), (2, 10890593140), (4, 5445296570), (5, 4356237256), (7, 3111598040), (8, 2722648285), (10, 2178118628), (14, 1555799020), (20, 1089059314), (28, 777899510), (35, 622319608), (40, 544529657), (56, 388949755), (70, 311159804), (140, 155579902), (280, 77789951)]