21271448

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 24693352

約数列:

[1, 2, 4, 8, 11, 22, 37, 44, 47, 74, 88, 94, 139, 148, 188, 278, 296, 376, 407, 517, 556, 814, 1034, 1112, 1529, 1628, 1739, 2068, 3058, 3256, 3478, 4136, 5143, 6116, 6533, 6956, 10286, 12232, 13066, 13912, 19129, 20572, 26132, 38258, 41144, 52264, 56573, 71863, 76516, 113146, 143726, 153032, 226292, 241721, 287452, 452584, 483442, 574904, 966884, 1933768, 2658931, 5317862, 10635724, 21271448]

約数ペア:

[(1, 21271448), (2, 10635724), (4, 5317862), (8, 2658931), (11, 1933768), (22, 966884), (37, 574904), (44, 483442), (47, 452584), (74, 287452), (88, 241721), (94, 226292), (139, 153032), (148, 143726), (188, 113146), (278, 76516), (296, 71863), (376, 56573), (407, 52264), (517, 41144), (556, 38258), (814, 26132), (1034, 20572), (1112, 19129), (1529, 13912), (1628, 13066), (1739, 12232), (2068, 10286), (3058, 6956), (3256, 6533), (3478, 6116), (4136, 5143)]