81213200

素因数分解:

$2^4\times 5^2\times {\mathrm{191}}^1\times {\mathrm{1063}}^1$

素因数の和:1272

約数の個数: 60

約数和(自身を含む): 196320768

約数和(自身を除く): 115107568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 191, 200, 382, 400, 764, 955, 1063, 1528, 1910, 2126, 3056, 3820, 4252, 4775, 5315, 7640, 8504, 9550, 10630, 15280, 17008, 19100, 21260, 26575, 38200, 42520, 53150, 76400, 85040, 106300, 203033, 212600, 406066, 425200, 812132, 1015165, 1624264, 2030330, 3248528, 4060660, 5075825, 8121320, 10151650, 16242640, 20303300, 40606600, 81213200]

約数ペア:

[(1, 81213200), (2, 40606600), (4, 20303300), (5, 16242640), (8, 10151650), (10, 8121320), (16, 5075825), (20, 4060660), (25, 3248528), (40, 2030330), (50, 1624264), (80, 1015165), (100, 812132), (191, 425200), (200, 406066), (382, 212600), (400, 203033), (764, 106300), (955, 85040), (1063, 76400), (1528, 53150), (1910, 42520), (2126, 38200), (3056, 26575), (3820, 21260), (4252, 19100), (4775, 17008), (5315, 15280), (7640, 10630), (8504, 9550)]