1640609840

素因数分解:

$2^4\times 5^1\times {\mathrm{20507623}}^1$

素因数の和:20507636

約数の個数: 20

約数和(自身を含む): 3814418064

約数和(自身を除く): 2173808224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20507623, 41015246, 82030492, 102538115, 164060984, 205076230, 328121968, 410152460, 820304920, 1640609840]

約数ペア:

[(1, 1640609840), (2, 820304920), (4, 410152460), (5, 328121968), (8, 205076230), (10, 164060984), (16, 102538115), (20, 82030492), (40, 41015246), (80, 20507623)]