81210400

素因数分解:

$2^5\times 5^2\times {\mathrm{101513}}^1$

素因数の和:101533

約数の個数: 36

約数和(自身を含む): 198256842

約数和(自身を除く): 117046442

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 101513, 203026, 406052, 507565, 812104, 1015130, 1624208, 2030260, 2537825, 3248416, 4060520, 5075650, 8121040, 10151300, 16242080, 20302600, 40605200, 81210400]

約数ペア:

[(1, 81210400), (2, 40605200), (4, 20302600), (5, 16242080), (8, 10151300), (10, 8121040), (16, 5075650), (20, 4060520), (25, 3248416), (32, 2537825), (40, 2030260), (50, 1624208), (80, 1015130), (100, 812104), (160, 507565), (200, 406052), (400, 203026), (800, 101513)]