81279220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9011}}^1$

素因数の和:9072

約数の個数: 48

約数和(自身を含む): 190766016

約数和(自身を除く): 109486796

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 41, 44, 55, 82, 110, 164, 205, 220, 410, 451, 820, 902, 1804, 2255, 4510, 9011, 9020, 18022, 36044, 45055, 90110, 99121, 180220, 198242, 369451, 396484, 495605, 738902, 991210, 1477804, 1847255, 1982420, 3694510, 4063961, 7389020, 8127922, 16255844, 20319805, 40639610, 81279220]

約数ペア:

[(1, 81279220), (2, 40639610), (4, 20319805), (5, 16255844), (10, 8127922), (11, 7389020), (20, 4063961), (22, 3694510), (41, 1982420), (44, 1847255), (55, 1477804), (82, 991210), (110, 738902), (164, 495605), (205, 396484), (220, 369451), (410, 198242), (451, 180220), (820, 99121), (902, 90110), (1804, 45055), (2255, 36044), (4510, 18022), (9011, 9020)]