18753680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:336

約数の個数: 80

約数和(自身を含む): 48264768

約数和(自身を除く): 29511088

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 101, 110, 176, 202, 211, 220, 404, 422, 440, 505, 808, 844, 880, 1010, 1055, 1111, 1616, 1688, 2020, 2110, 2222, 2321, 3376, 4040, 4220, 4444, 4642, 5555, 8080, 8440, 8888, 9284, 11110, 11605, 16880, 17776, 18568, 21311, 22220, 23210, 37136, 42622, 44440, 46420, 85244, 88880, 92840, 106555, 170488, 185680, 213110, 234421, 340976, 426220, 468842, 852440, 937684, 1172105, 1704880, 1875368, 2344210, 3750736, 4688420, 9376840, 18753680]

約数ペア:

[(1, 18753680), (2, 9376840), (4, 4688420), (5, 3750736), (8, 2344210), (10, 1875368), (11, 1704880), (16, 1172105), (20, 937684), (22, 852440), (40, 468842), (44, 426220), (55, 340976), (80, 234421), (88, 213110), (101, 185680), (110, 170488), (176, 106555), (202, 92840), (211, 88880), (220, 85244), (404, 46420), (422, 44440), (440, 42622), (505, 37136), (808, 23210), (844, 22220), (880, 21311), (1010, 18568), (1055, 17776), (1111, 16880), (1616, 11605), (1688, 11110), (2020, 9284), (2110, 8888), (2222, 8440), (2321, 8080), (3376, 5555), (4040, 4642), (4220, 4444)]