21155268

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 55157760

約数和(自身を除く): 34002492

約数列:

[1, 2, 3, 4, 6, 12, 29, 31, 37, 53, 58, 62, 74, 87, 93, 106, 111, 116, 124, 148, 159, 174, 186, 212, 222, 318, 348, 372, 444, 636, 899, 1073, 1147, 1537, 1643, 1798, 1961, 2146, 2294, 2697, 3074, 3219, 3286, 3441, 3596, 3922, 4292, 4588, 4611, 4929, 5394, 5883, 6148, 6438, 6572, 6882, 7844, 9222, 9858, 10788, 11766, 12876, 13764, 18444, 19716, 23532, 33263, 47647, 56869, 60791, 66526, 95294, 99789, 113738, 121582, 133052, 142941, 170607, 182373, 190588, 199578, 227476, 243164, 285882, 341214, 364746, 399156, 571764, 682428, 729492, 1762939, 3525878, 5288817, 7051756, 10577634, 21155268]

約数ペア:

[(1, 21155268), (2, 10577634), (3, 7051756), (4, 5288817), (6, 3525878), (12, 1762939), (29, 729492), (31, 682428), (37, 571764), (53, 399156), (58, 364746), (62, 341214), (74, 285882), (87, 243164), (93, 227476), (106, 199578), (111, 190588), (116, 182373), (124, 170607), (148, 142941), (159, 133052), (174, 121582), (186, 113738), (212, 99789), (222, 95294), (318, 66526), (348, 60791), (372, 56869), (444, 47647), (636, 33263), (899, 23532), (1073, 19716), (1147, 18444), (1537, 13764), (1643, 12876), (1798, 11766), (1961, 10788), (2146, 9858), (2294, 9222), (2697, 7844), (3074, 6882), (3219, 6572), (3286, 6438), (3441, 6148), (3596, 5883), (3922, 5394), (4292, 4929), (4588, 4611)]