80200000

素因数分解:

$2^6\times 5^5\times {\mathrm{401}}^1$

素因数の和:438

約数の個数: 84

約数和(自身を含む): 199416924

約数和(自身を除く): 119216924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 160, 200, 250, 320, 400, 401, 500, 625, 800, 802, 1000, 1250, 1600, 1604, 2000, 2005, 2500, 3125, 3208, 4000, 4010, 5000, 6250, 6416, 8000, 8020, 10000, 10025, 12500, 12832, 16040, 20000, 20050, 25000, 25664, 32080, 40000, 40100, 50000, 50125, 64160, 80200, 100000, 100250, 128320, 160400, 200000, 200500, 250625, 320800, 401000, 501250, 641600, 802000, 1002500, 1253125, 1604000, 2005000, 2506250, 3208000, 4010000, 5012500, 8020000, 10025000, 16040000, 20050000, 40100000, 80200000]

約数ペア:

[(1, 80200000), (2, 40100000), (4, 20050000), (5, 16040000), (8, 10025000), (10, 8020000), (16, 5012500), (20, 4010000), (25, 3208000), (32, 2506250), (40, 2005000), (50, 1604000), (64, 1253125), (80, 1002500), (100, 802000), (125, 641600), (160, 501250), (200, 401000), (250, 320800), (320, 250625), (400, 200500), (401, 200000), (500, 160400), (625, 128320), (800, 100250), (802, 100000), (1000, 80200), (1250, 64160), (1600, 50125), (1604, 50000), (2000, 40100), (2005, 40000), (2500, 32080), (3125, 25664), (3208, 25000), (4000, 20050), (4010, 20000), (5000, 16040), (6250, 12832), (6416, 12500), (8000, 10025), (8020, 10000)]