20579305000

素因数分解:

$2^3\times 5^4\times {\mathrm{641}}^1\times {\mathrm{6421}}^1$

素因数の和:7088

約数の個数: 80

約数和(自身を含む): 48300054660

約数和(自身を除く): 27720749660

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 641, 1000, 1250, 1282, 2500, 2564, 3205, 5000, 5128, 6410, 6421, 12820, 12842, 16025, 25640, 25684, 32050, 32105, 51368, 64100, 64210, 80125, 128200, 128420, 160250, 160525, 256840, 320500, 321050, 400625, 641000, 642100, 801250, 802625, 1284200, 1602500, 1605250, 3205000, 3210500, 4013125, 4115861, 6421000, 8026250, 8231722, 16052500, 16463444, 20579305, 32105000, 32926888, 41158610, 82317220, 102896525, 164634440, 205793050, 411586100, 514482625, 823172200, 1028965250, 2057930500, 2572413125, 4115861000, 5144826250, 10289652500, 20579305000]

約数ペア:

[(1, 20579305000), (2, 10289652500), (4, 5144826250), (5, 4115861000), (8, 2572413125), (10, 2057930500), (20, 1028965250), (25, 823172200), (40, 514482625), (50, 411586100), (100, 205793050), (125, 164634440), (200, 102896525), (250, 82317220), (500, 41158610), (625, 32926888), (641, 32105000), (1000, 20579305), (1250, 16463444), (1282, 16052500), (2500, 8231722), (2564, 8026250), (3205, 6421000), (5000, 4115861), (5128, 4013125), (6410, 3210500), (6421, 3205000), (12820, 1605250), (12842, 1602500), (16025, 1284200), (25640, 802625), (25684, 801250), (32050, 642100), (32105, 641000), (51368, 400625), (64100, 321050), (64210, 320500), (80125, 256840), (128200, 160525), (128420, 160250)]