20828600

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{8011}}^1$

素因数の和:8040

約数の個数: 48

約数和(自身を含む): 52158120

約数和(自身を除く): 31329520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 8011, 16022, 32044, 40055, 64088, 80110, 104143, 160220, 200275, 208286, 320440, 400550, 416572, 520715, 801100, 833144, 1041430, 1602200, 2082860, 2603575, 4165720, 5207150, 10414300, 20828600]

約数ペア:

[(1, 20828600), (2, 10414300), (4, 5207150), (5, 4165720), (8, 2603575), (10, 2082860), (13, 1602200), (20, 1041430), (25, 833144), (26, 801100), (40, 520715), (50, 416572), (52, 400550), (65, 320440), (100, 208286), (104, 200275), (130, 160220), (200, 104143), (260, 80110), (325, 64088), (520, 40055), (650, 32044), (1300, 16022), (2600, 8011)]