21041384

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4129}}^1$

素因数の和:4162

約数の個数: 48

約数和(自身を含む): 49436100

約数和(自身を除く): 28394716

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 4129, 5096, 8258, 16516, 28903, 33032, 53677, 57806, 107354, 115612, 202321, 214708, 231224, 375739, 404642, 429416, 751478, 809284, 1502956, 1618568, 2630173, 3005912, 5260346, 10520692, 21041384]

約数ペア:

[(1, 21041384), (2, 10520692), (4, 5260346), (7, 3005912), (8, 2630173), (13, 1618568), (14, 1502956), (26, 809284), (28, 751478), (49, 429416), (52, 404642), (56, 375739), (91, 231224), (98, 214708), (104, 202321), (182, 115612), (196, 107354), (364, 57806), (392, 53677), (637, 33032), (728, 28903), (1274, 16516), (2548, 8258), (4129, 5096)]