21685244

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1$

素因数の和:175

約数の個数: 72

約数和(自身を含む): 47190528

約数和(自身を除く): 25505284

約数列:

[1, 2, 4, 7, 14, 28, 31, 43, 49, 62, 83, 86, 98, 124, 166, 172, 196, 217, 301, 332, 434, 581, 602, 868, 1162, 1204, 1333, 1519, 2107, 2324, 2573, 2666, 3038, 3569, 4067, 4214, 5146, 5332, 6076, 7138, 8134, 8428, 9331, 10292, 14276, 16268, 18011, 18662, 24983, 36022, 37324, 49966, 65317, 72044, 99932, 110639, 126077, 130634, 174881, 221278, 252154, 261268, 349762, 442556, 504308, 699524, 774473, 1548946, 3097892, 5421311, 10842622, 21685244]

約数ペア:

[(1, 21685244), (2, 10842622), (4, 5421311), (7, 3097892), (14, 1548946), (28, 774473), (31, 699524), (43, 504308), (49, 442556), (62, 349762), (83, 261268), (86, 252154), (98, 221278), (124, 174881), (166, 130634), (172, 126077), (196, 110639), (217, 99932), (301, 72044), (332, 65317), (434, 49966), (581, 37324), (602, 36022), (868, 24983), (1162, 18662), (1204, 18011), (1333, 16268), (1519, 14276), (2107, 10292), (2324, 9331), (2573, 8428), (2666, 8134), (3038, 7138), (3569, 6076), (4067, 5332), (4214, 5146)]