21312688

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{107}}^1\times {\mathrm{211}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 42586560

約数和(自身を除く): 21273872

約数列:

[1, 2, 4, 8, 16, 59, 107, 118, 211, 214, 236, 422, 428, 472, 844, 856, 944, 1688, 1712, 3376, 6313, 12449, 12626, 22577, 24898, 25252, 45154, 49796, 50504, 90308, 99592, 101008, 180616, 199184, 361232, 1332043, 2664086, 5328172, 10656344, 21312688]

約数ペア:

[(1, 21312688), (2, 10656344), (4, 5328172), (8, 2664086), (16, 1332043), (59, 361232), (107, 199184), (118, 180616), (211, 101008), (214, 99592), (236, 90308), (422, 50504), (428, 49796), (472, 45154), (844, 25252), (856, 24898), (944, 22577), (1688, 12626), (1712, 12449), (3376, 6313)]