66450640

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{1973}}^1$

素因数の和:2407

約数の個数: 40

約数和(自身を含む): 154943208

約数和(自身を除く): 88492568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 842, 1684, 1973, 2105, 3368, 3946, 4210, 6736, 7892, 8420, 9865, 15784, 16840, 19730, 31568, 33680, 39460, 78920, 157840, 830633, 1661266, 3322532, 4153165, 6645064, 8306330, 13290128, 16612660, 33225320, 66450640]

約数ペア:

[(1, 66450640), (2, 33225320), (4, 16612660), (5, 13290128), (8, 8306330), (10, 6645064), (16, 4153165), (20, 3322532), (40, 1661266), (80, 830633), (421, 157840), (842, 78920), (1684, 39460), (1973, 33680), (2105, 31568), (3368, 19730), (3946, 16840), (4210, 15784), (6736, 9865), (7892, 8420)]