21422440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{3169}}^1$

素因数の和:3206

約数の個数: 48

約数和(自身を含む): 52209900

約数和(自身を除く): 30787460

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3169, 3380, 6338, 6760, 12676, 15845, 25352, 31690, 41197, 63380, 82394, 126760, 164788, 205985, 329576, 411970, 535561, 823940, 1071122, 1647880, 2142244, 2677805, 4284488, 5355610, 10711220, 21422440]

約数ペア:

[(1, 21422440), (2, 10711220), (4, 5355610), (5, 4284488), (8, 2677805), (10, 2142244), (13, 1647880), (20, 1071122), (26, 823940), (40, 535561), (52, 411970), (65, 329576), (104, 205985), (130, 164788), (169, 126760), (260, 82394), (338, 63380), (520, 41197), (676, 31690), (845, 25352), (1352, 15845), (1690, 12676), (3169, 6760), (3380, 6338)]