20838965

素因数分解:

$5^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{419}}^1$

素因数の和:474

約数の個数: 32

約数和(自身を含む): 30240000

約数和(自身を除く): 9401035

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 343, 419, 1015, 1421, 1715, 2095, 2933, 7105, 9947, 12151, 14665, 20531, 49735, 60755, 85057, 102655, 143717, 425285, 595399, 718585, 2976995, 4167793, 20838965]

約数ペア:

[(1, 20838965), (5, 4167793), (7, 2976995), (29, 718585), (35, 595399), (49, 425285), (145, 143717), (203, 102655), (245, 85057), (343, 60755), (419, 49735), (1015, 20531), (1421, 14665), (1715, 12151), (2095, 9947), (2933, 7105)]