145381420

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{71971}}^1$

素因数の和:72081

約数の個数: 24

約数和(自身を含む): 308328048

約数和(自身を除く): 162946628

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 71971, 143942, 287884, 359855, 719710, 1439420, 7269071, 14538142, 29076284, 36345355, 72690710, 145381420]

約数ペア:

[(1, 145381420), (2, 72690710), (4, 36345355), (5, 29076284), (10, 14538142), (20, 7269071), (101, 1439420), (202, 719710), (404, 359855), (505, 287884), (1010, 143942), (2020, 71971)]