198440

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{41}}^1$

素因数の和:74

約数の個数: 48

約数和(自身を含む): 502740

約数和(自身を除く): 304300

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 121, 164, 205, 220, 242, 328, 410, 440, 451, 484, 605, 820, 902, 968, 1210, 1640, 1804, 2255, 2420, 3608, 4510, 4840, 4961, 9020, 9922, 18040, 19844, 24805, 39688, 49610, 99220, 198440]

約数ペア:

[(1, 198440), (2, 99220), (4, 49610), (5, 39688), (8, 24805), (10, 19844), (11, 18040), (20, 9922), (22, 9020), (40, 4961), (41, 4840), (44, 4510), (55, 3608), (82, 2420), (88, 2255), (110, 1804), (121, 1640), (164, 1210), (205, 968), (220, 902), (242, 820), (328, 605), (410, 484), (440, 451)]