20004245

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:209

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 6606955

約数列:

[1, 5, 19, 43, 59, 83, 95, 215, 295, 415, 817, 1121, 1577, 2537, 3569, 4085, 4897, 5605, 7885, 12685, 17845, 24485, 48203, 67811, 93043, 210571, 241015, 339055, 465215, 1052855, 4000849, 20004245]

約数ペア:

[(1, 20004245), (5, 4000849), (19, 1052855), (43, 465215), (59, 339055), (83, 241015), (95, 210571), (215, 93043), (295, 67811), (415, 48203), (817, 24485), (1121, 17845), (1577, 12685), (2537, 7885), (3569, 5605), (4085, 4897)]