1621000420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{20047}}^1$

素因数の和:20380

約数の個数: 48

約数和(自身を含む): 3677925888

約数和(自身を除く): 2056925468

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 311, 622, 1244, 1555, 3110, 4043, 6220, 8086, 16172, 20047, 20215, 40094, 40430, 80188, 80860, 100235, 200470, 260611, 400940, 521222, 1042444, 1303055, 2606110, 5212220, 6234617, 12469234, 24938468, 31173085, 62346170, 81050021, 124692340, 162100042, 324200084, 405250105, 810500210, 1621000420]

約数ペア:

[(1, 1621000420), (2, 810500210), (4, 405250105), (5, 324200084), (10, 162100042), (13, 124692340), (20, 81050021), (26, 62346170), (52, 31173085), (65, 24938468), (130, 12469234), (260, 6234617), (311, 5212220), (622, 2606110), (1244, 1303055), (1555, 1042444), (3110, 521222), (4043, 400940), (6220, 260611), (8086, 200470), (16172, 100235), (20047, 80860), (20215, 80188), (40094, 40430)]