19558880

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11113}}^1$

素因数の和:11139

約数の個数: 48

約数和(自身を含む): 50413104

約数和(自身を除く): 30854224

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11113, 22226, 44452, 55565, 88904, 111130, 122243, 177808, 222260, 244486, 355616, 444520, 488972, 611215, 889040, 977944, 1222430, 1778080, 1955888, 2444860, 3911776, 4889720, 9779440, 19558880]

約数ペア:

[(1, 19558880), (2, 9779440), (4, 4889720), (5, 3911776), (8, 2444860), (10, 1955888), (11, 1778080), (16, 1222430), (20, 977944), (22, 889040), (32, 611215), (40, 488972), (44, 444520), (55, 355616), (80, 244486), (88, 222260), (110, 177808), (160, 122243), (176, 111130), (220, 88904), (352, 55565), (440, 44452), (880, 22226), (1760, 11113)]