21081900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{10039}}^1$

素因数の和:10063

約数の個数: 72

約数和(自身を含む): 69717760

約数和(自身を除く): 48635860

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 10039, 20078, 30117, 40156, 50195, 60234, 70273, 100390, 120468, 140546, 150585, 200780, 210819, 250975, 281092, 301170, 351365, 421638, 501950, 602340, 702730, 752925, 843276, 1003900, 1054095, 1405460, 1505850, 1756825, 2108190, 3011700, 3513650, 4216380, 5270475, 7027300, 10540950, 21081900]

約数ペア:

[(1, 21081900), (2, 10540950), (3, 7027300), (4, 5270475), (5, 4216380), (6, 3513650), (7, 3011700), (10, 2108190), (12, 1756825), (14, 1505850), (15, 1405460), (20, 1054095), (21, 1003900), (25, 843276), (28, 752925), (30, 702730), (35, 602340), (42, 501950), (50, 421638), (60, 351365), (70, 301170), (75, 281092), (84, 250975), (100, 210819), (105, 200780), (140, 150585), (150, 140546), (175, 120468), (210, 100390), (300, 70273), (350, 60234), (420, 50195), (525, 40156), (700, 30117), (1050, 20078), (2100, 10039)]