391799440

素因数分解:

$2^4\times 5^1\times {\mathrm{421}}^1\times {\mathrm{11633}}^1$

素因数の和:12067

約数の個数: 40

約数和(自身を含む): 913175928

約数和(自身を除く): 521376488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 421, 842, 1684, 2105, 3368, 4210, 6736, 8420, 11633, 16840, 23266, 33680, 46532, 58165, 93064, 116330, 186128, 232660, 465320, 930640, 4897493, 9794986, 19589972, 24487465, 39179944, 48974930, 78359888, 97949860, 195899720, 391799440]

約数ペア:

[(1, 391799440), (2, 195899720), (4, 97949860), (5, 78359888), (8, 48974930), (10, 39179944), (16, 24487465), (20, 19589972), (40, 9794986), (80, 4897493), (421, 930640), (842, 465320), (1684, 232660), (2105, 186128), (3368, 116330), (4210, 93064), (6736, 58165), (8420, 46532), (11633, 33680), (16840, 23266)]