21399144

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{641}}^1$

素因数の和:770

約数の個数: 64

約数和(自身を含む): 58242240

約数和(自身を除く): 36843096

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 107, 156, 214, 312, 321, 428, 641, 642, 856, 1282, 1284, 1391, 1923, 2564, 2568, 2782, 3846, 4173, 5128, 5564, 7692, 8333, 8346, 11128, 15384, 16666, 16692, 24999, 33332, 33384, 49998, 66664, 68587, 99996, 137174, 199992, 205761, 274348, 411522, 548696, 823044, 891631, 1646088, 1783262, 2674893, 3566524, 5349786, 7133048, 10699572, 21399144]

約数ペア:

[(1, 21399144), (2, 10699572), (3, 7133048), (4, 5349786), (6, 3566524), (8, 2674893), (12, 1783262), (13, 1646088), (24, 891631), (26, 823044), (39, 548696), (52, 411522), (78, 274348), (104, 205761), (107, 199992), (156, 137174), (214, 99996), (312, 68587), (321, 66664), (428, 49998), (641, 33384), (642, 33332), (856, 24999), (1282, 16692), (1284, 16666), (1391, 15384), (1923, 11128), (2564, 8346), (2568, 8333), (2782, 7692), (3846, 5564), (4173, 5128)]