20619915

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{701}}^1$

素因数の和:799

約数の個数: 32

約数和(自身を含む): 34572096

約数和(自身を除く): 13952181

約数列:

[1, 3, 5, 15, 37, 53, 111, 159, 185, 265, 555, 701, 795, 1961, 2103, 3505, 5883, 9805, 10515, 25937, 29415, 37153, 77811, 111459, 129685, 185765, 389055, 557295, 1374661, 4123983, 6873305, 20619915]

約数ペア:

[(1, 20619915), (3, 6873305), (5, 4123983), (15, 1374661), (37, 557295), (53, 389055), (111, 185765), (159, 129685), (185, 111459), (265, 77811), (555, 37153), (701, 29415), (795, 25937), (1961, 10515), (2103, 9805), (3505, 5883)]