281827400

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{223}}^1$

素因数の和:399

約数の個数: 96

約数和(自身を含む): 674956800

約数和(自身を除く): 393129400

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 89, 100, 142, 178, 200, 223, 284, 355, 356, 445, 446, 568, 710, 712, 890, 892, 1115, 1420, 1775, 1780, 1784, 2225, 2230, 2840, 3550, 3560, 4450, 4460, 5575, 6319, 7100, 8900, 8920, 11150, 12638, 14200, 15833, 17800, 19847, 22300, 25276, 31595, 31666, 39694, 44600, 50552, 63190, 63332, 79165, 79388, 99235, 126380, 126664, 157975, 158330, 158776, 198470, 252760, 315950, 316660, 395825, 396940, 496175, 631900, 633320, 791650, 793880, 992350, 1263800, 1409137, 1583300, 1984700, 2818274, 3166600, 3969400, 5636548, 7045685, 11273096, 14091370, 28182740, 35228425, 56365480, 70456850, 140913700, 281827400]

約数ペア:

[(1, 281827400), (2, 140913700), (4, 70456850), (5, 56365480), (8, 35228425), (10, 28182740), (20, 14091370), (25, 11273096), (40, 7045685), (50, 5636548), (71, 3969400), (89, 3166600), (100, 2818274), (142, 1984700), (178, 1583300), (200, 1409137), (223, 1263800), (284, 992350), (355, 793880), (356, 791650), (445, 633320), (446, 631900), (568, 496175), (710, 396940), (712, 395825), (890, 316660), (892, 315950), (1115, 252760), (1420, 198470), (1775, 158776), (1780, 158330), (1784, 157975), (2225, 126664), (2230, 126380), (2840, 99235), (3550, 79388), (3560, 79165), (4450, 63332), (4460, 63190), (5575, 50552), (6319, 44600), (7100, 39694), (8900, 31666), (8920, 31595), (11150, 25276), (12638, 22300), (14200, 19847), (15833, 17800)]