21904352

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 45287424

約数和(自身を除く): 23383072

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 71, 124, 142, 248, 284, 311, 496, 568, 622, 992, 1136, 1244, 2201, 2272, 2488, 4402, 4976, 8804, 9641, 9952, 17608, 19282, 22081, 35216, 38564, 44162, 70432, 77128, 88324, 154256, 176648, 308512, 353296, 684511, 706592, 1369022, 2738044, 5476088, 10952176, 21904352]

約数ペア:

[(1, 21904352), (2, 10952176), (4, 5476088), (8, 2738044), (16, 1369022), (31, 706592), (32, 684511), (62, 353296), (71, 308512), (124, 176648), (142, 154256), (248, 88324), (284, 77128), (311, 70432), (496, 44162), (568, 38564), (622, 35216), (992, 22081), (1136, 19282), (1244, 17608), (2201, 9952), (2272, 9641), (2488, 8804), (4402, 4976)]