1984400

素因数分解:

$2^4\times 5^2\times {\mathrm{11}}^2\times {\mathrm{41}}^1$

素因数の和:81

約数の個数: 90

約数和(自身を含む): 5368146

約数和(自身を除く): 3383746

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 41, 44, 50, 55, 80, 82, 88, 100, 110, 121, 164, 176, 200, 205, 220, 242, 275, 328, 400, 410, 440, 451, 484, 550, 605, 656, 820, 880, 902, 968, 1025, 1100, 1210, 1640, 1804, 1936, 2050, 2200, 2255, 2420, 3025, 3280, 3608, 4100, 4400, 4510, 4840, 4961, 6050, 7216, 8200, 9020, 9680, 9922, 11275, 12100, 16400, 18040, 19844, 22550, 24200, 24805, 36080, 39688, 45100, 48400, 49610, 79376, 90200, 99220, 124025, 180400, 198440, 248050, 396880, 496100, 992200, 1984400]

約数ペア:

[(1, 1984400), (2, 992200), (4, 496100), (5, 396880), (8, 248050), (10, 198440), (11, 180400), (16, 124025), (20, 99220), (22, 90200), (25, 79376), (40, 49610), (41, 48400), (44, 45100), (50, 39688), (55, 36080), (80, 24805), (82, 24200), (88, 22550), (100, 19844), (110, 18040), (121, 16400), (164, 12100), (176, 11275), (200, 9922), (205, 9680), (220, 9020), (242, 8200), (275, 7216), (328, 6050), (400, 4961), (410, 4840), (440, 4510), (451, 4400), (484, 4100), (550, 3608), (605, 3280), (656, 3025), (820, 2420), (880, 2255), (902, 2200), (968, 2050), (1025, 1936), (1100, 1804), (1210, 1640)]