21284868

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^2\times {\mathrm{107}}^1\times {\mathrm{137}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 55502496

約数和(自身を除く): 34217628

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 107, 121, 132, 137, 214, 242, 274, 321, 363, 411, 428, 484, 548, 642, 726, 822, 1177, 1284, 1452, 1507, 1644, 2354, 3014, 3531, 4521, 4708, 6028, 7062, 9042, 12947, 14124, 14659, 16577, 18084, 25894, 29318, 33154, 38841, 43977, 49731, 51788, 58636, 66308, 77682, 87954, 99462, 155364, 161249, 175908, 198924, 322498, 483747, 644996, 967494, 1773739, 1934988, 3547478, 5321217, 7094956, 10642434, 21284868]

約数ペア:

[(1, 21284868), (2, 10642434), (3, 7094956), (4, 5321217), (6, 3547478), (11, 1934988), (12, 1773739), (22, 967494), (33, 644996), (44, 483747), (66, 322498), (107, 198924), (121, 175908), (132, 161249), (137, 155364), (214, 99462), (242, 87954), (274, 77682), (321, 66308), (363, 58636), (411, 51788), (428, 49731), (484, 43977), (548, 38841), (642, 33154), (726, 29318), (822, 25894), (1177, 18084), (1284, 16577), (1452, 14659), (1507, 14124), (1644, 12947), (2354, 9042), (3014, 7062), (3531, 6028), (4521, 4708)]