21000773360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{3319}}^1\times {\mathrm{11299}}^1$

素因数の和:14638

約数の個数: 80

約数和(自身を含む): 55823808000

約数和(自身を除く): 34823034640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 3319, 6638, 11299, 13276, 16595, 22598, 23233, 26552, 33190, 45196, 46466, 53104, 56495, 66380, 79093, 90392, 92932, 112990, 116165, 132760, 158186, 180784, 185864, 225980, 232330, 265520, 316372, 371728, 395465, 451960, 464660, 632744, 790930, 903920, 929320, 1265488, 1581860, 1858640, 3163720, 6327440, 37501381, 75002762, 150005524, 187506905, 262509667, 300011048, 375013810, 525019334, 600022096, 750027620, 1050038668, 1312548335, 1500055240, 2100077336, 2625096670, 3000110480, 4200154672, 5250193340, 10500386680, 21000773360]

約数ペア:

[(1, 21000773360), (2, 10500386680), (4, 5250193340), (5, 4200154672), (7, 3000110480), (8, 2625096670), (10, 2100077336), (14, 1500055240), (16, 1312548335), (20, 1050038668), (28, 750027620), (35, 600022096), (40, 525019334), (56, 375013810), (70, 300011048), (80, 262509667), (112, 187506905), (140, 150005524), (280, 75002762), (560, 37501381), (3319, 6327440), (6638, 3163720), (11299, 1858640), (13276, 1581860), (16595, 1265488), (22598, 929320), (23233, 903920), (26552, 790930), (33190, 632744), (45196, 464660), (46466, 451960), (53104, 395465), (56495, 371728), (66380, 316372), (79093, 265520), (90392, 232330), (92932, 225980), (112990, 185864), (116165, 180784), (132760, 158186)]