21154804

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{281}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 42638400

約数和(自身を除く): 21483596

約数列:

[1, 2, 4, 11, 22, 29, 44, 58, 59, 116, 118, 236, 281, 319, 562, 638, 649, 1124, 1276, 1298, 1711, 2596, 3091, 3422, 6182, 6844, 8149, 12364, 16298, 16579, 18821, 32596, 33158, 37642, 66316, 75284, 89639, 179278, 182369, 358556, 364738, 480791, 729476, 961582, 1923164, 5288701, 10577402, 21154804]

約数ペア:

[(1, 21154804), (2, 10577402), (4, 5288701), (11, 1923164), (22, 961582), (29, 729476), (44, 480791), (58, 364738), (59, 358556), (116, 182369), (118, 179278), (236, 89639), (281, 75284), (319, 66316), (562, 37642), (638, 33158), (649, 32596), (1124, 18821), (1276, 16579), (1298, 16298), (1711, 12364), (2596, 8149), (3091, 6844), (3422, 6182)]