201971720

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{49993}}^1$

素因数の和:50105

約数の個数: 32

約数和(自身を含む): 458944920

約数和(自身を除く): 256973200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 49993, 99986, 199972, 249965, 399944, 499930, 999860, 1999720, 5049293, 10098586, 20197172, 25246465, 40394344, 50492930, 100985860, 201971720]

約数ペア:

[(1, 201971720), (2, 100985860), (4, 50492930), (5, 40394344), (8, 25246465), (10, 20197172), (20, 10098586), (40, 5049293), (101, 1999720), (202, 999860), (404, 499930), (505, 399944), (808, 249965), (1010, 199972), (2020, 99986), (4040, 49993)]