20498415

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{167}}^2$

素因数の和:356

約数の個数: 36

約数和(自身を含む): 38381976

約数和(自身を除く): 17883561

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 167, 245, 501, 735, 835, 1169, 2505, 3507, 5845, 8183, 17535, 24549, 27889, 40915, 83667, 122745, 139445, 195223, 418335, 585669, 976115, 1366561, 2928345, 4099683, 6832805, 20498415]

約数ペア:

[(1, 20498415), (3, 6832805), (5, 4099683), (7, 2928345), (15, 1366561), (21, 976115), (35, 585669), (49, 418335), (105, 195223), (147, 139445), (167, 122745), (245, 83667), (501, 40915), (735, 27889), (835, 24549), (1169, 17535), (2505, 8183), (3507, 5845)]