201771320

素因数分解:

$2^3\times 5^1\times {\mathrm{1993}}^1\times {\mathrm{2531}}^1$

素因数の和:4535

約数の個数: 32

約数和(自身を含む): 454392720

約数和(自身を除く): 252621400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1993, 2531, 3986, 5062, 7972, 9965, 10124, 12655, 15944, 19930, 20248, 25310, 39860, 50620, 79720, 101240, 5044283, 10088566, 20177132, 25221415, 40354264, 50442830, 100885660, 201771320]

約数ペア:

[(1, 201771320), (2, 100885660), (4, 50442830), (5, 40354264), (8, 25221415), (10, 20177132), (20, 10088566), (40, 5044283), (1993, 101240), (2531, 79720), (3986, 50620), (5062, 39860), (7972, 25310), (9965, 20248), (10124, 19930), (12655, 15944)]