21263900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{821}}^1$

素因数の和:879

約数の個数: 72

約数和(自身を含む): 54225696

約数和(自身を除く): 32961796

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 37, 50, 70, 74, 100, 140, 148, 175, 185, 259, 350, 370, 518, 700, 740, 821, 925, 1036, 1295, 1642, 1850, 2590, 3284, 3700, 4105, 5180, 5747, 6475, 8210, 11494, 12950, 16420, 20525, 22988, 25900, 28735, 30377, 41050, 57470, 60754, 82100, 114940, 121508, 143675, 151885, 212639, 287350, 303770, 425278, 574700, 607540, 759425, 850556, 1063195, 1518850, 2126390, 3037700, 4252780, 5315975, 10631950, 21263900]

約数ペア:

[(1, 21263900), (2, 10631950), (4, 5315975), (5, 4252780), (7, 3037700), (10, 2126390), (14, 1518850), (20, 1063195), (25, 850556), (28, 759425), (35, 607540), (37, 574700), (50, 425278), (70, 303770), (74, 287350), (100, 212639), (140, 151885), (148, 143675), (175, 121508), (185, 114940), (259, 82100), (350, 60754), (370, 57470), (518, 41050), (700, 30377), (740, 28735), (821, 25900), (925, 22988), (1036, 20525), (1295, 16420), (1642, 12950), (1850, 11494), (2590, 8210), (3284, 6475), (3700, 5747), (4105, 5180)]