2160400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^1\times {\mathrm{491}}^1$

素因数の和:520

約数の個数: 60

約数和(自身を含む): 5673744

約数和(自身を除く): 3513344

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 100, 110, 176, 200, 220, 275, 400, 440, 491, 550, 880, 982, 1100, 1964, 2200, 2455, 3928, 4400, 4910, 5401, 7856, 9820, 10802, 12275, 19640, 21604, 24550, 27005, 39280, 43208, 49100, 54010, 86416, 98200, 108020, 135025, 196400, 216040, 270050, 432080, 540100, 1080200, 2160400]

約数ペア:

[(1, 2160400), (2, 1080200), (4, 540100), (5, 432080), (8, 270050), (10, 216040), (11, 196400), (16, 135025), (20, 108020), (22, 98200), (25, 86416), (40, 54010), (44, 49100), (50, 43208), (55, 39280), (80, 27005), (88, 24550), (100, 21604), (110, 19640), (176, 12275), (200, 10802), (220, 9820), (275, 7856), (400, 5401), (440, 4910), (491, 4400), (550, 3928), (880, 2455), (982, 2200), (1100, 1964)]