21000833245

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{311}}^1\times {\mathrm{47057}}^1$

素因数の和:47421

約数の個数: 32

約数和(自身を含む): 29599105536

約数和(自身を除く): 8598272291

約数列:

[1, 5, 7, 35, 41, 205, 287, 311, 1435, 1555, 2177, 10885, 12751, 47057, 63755, 89257, 235285, 329399, 446285, 1646995, 1929337, 9646685, 13505359, 14634727, 67526795, 73173635, 102443089, 512215445, 600023807, 3000119035, 4200166649, 21000833245]

約数ペア:

[(1, 21000833245), (5, 4200166649), (7, 3000119035), (35, 600023807), (41, 512215445), (205, 102443089), (287, 73173635), (311, 67526795), (1435, 14634727), (1555, 13505359), (2177, 9646685), (10885, 1929337), (12751, 1646995), (47057, 446285), (63755, 329399), (89257, 235285)]