21382744

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1$

素因数の和:172

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 22940456

約数列:

[1, 2, 4, 8, 29, 37, 47, 53, 58, 74, 94, 106, 116, 148, 188, 212, 232, 296, 376, 424, 1073, 1363, 1537, 1739, 1961, 2146, 2491, 2726, 3074, 3478, 3922, 4292, 4982, 5452, 6148, 6956, 7844, 8584, 9964, 10904, 12296, 13912, 15688, 19928, 50431, 56869, 72239, 92167, 100862, 113738, 144478, 184334, 201724, 227476, 288956, 368668, 403448, 454952, 577912, 737336, 2672843, 5345686, 10691372, 21382744]

約数ペア:

[(1, 21382744), (2, 10691372), (4, 5345686), (8, 2672843), (29, 737336), (37, 577912), (47, 454952), (53, 403448), (58, 368668), (74, 288956), (94, 227476), (106, 201724), (116, 184334), (148, 144478), (188, 113738), (212, 100862), (232, 92167), (296, 72239), (376, 56869), (424, 50431), (1073, 19928), (1363, 15688), (1537, 13912), (1739, 12296), (1961, 10904), (2146, 9964), (2491, 8584), (2726, 7844), (3074, 6956), (3478, 6148), (3922, 5452), (4292, 4982)]