21905478

素因数分解:

$2^1\times 3^5\times 7^1\times {\mathrm{47}}^1\times {\mathrm{137}}^1$

素因数の和:208

約数の個数: 96

約数和(自身を含む): 57867264

約数和(自身を除く): 35961786

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 47, 54, 63, 81, 94, 126, 137, 141, 162, 189, 243, 274, 282, 329, 378, 411, 423, 486, 567, 658, 822, 846, 959, 987, 1134, 1233, 1269, 1701, 1918, 1974, 2466, 2538, 2877, 2961, 3402, 3699, 3807, 5754, 5922, 6439, 7398, 7614, 8631, 8883, 11097, 11421, 12878, 17262, 17766, 19317, 22194, 22842, 25893, 26649, 33291, 38634, 45073, 51786, 53298, 57951, 66582, 77679, 79947, 90146, 115902, 135219, 155358, 159894, 173853, 233037, 270438, 347706, 405657, 466074, 521559, 811314, 1043118, 1216971, 1564677, 2433942, 3129354, 3650913, 7301826, 10952739, 21905478]

約数ペア:

[(1, 21905478), (2, 10952739), (3, 7301826), (6, 3650913), (7, 3129354), (9, 2433942), (14, 1564677), (18, 1216971), (21, 1043118), (27, 811314), (42, 521559), (47, 466074), (54, 405657), (63, 347706), (81, 270438), (94, 233037), (126, 173853), (137, 159894), (141, 155358), (162, 135219), (189, 115902), (243, 90146), (274, 79947), (282, 77679), (329, 66582), (378, 57951), (411, 53298), (423, 51786), (486, 45073), (567, 38634), (658, 33291), (822, 26649), (846, 25893), (959, 22842), (987, 22194), (1134, 19317), (1233, 17766), (1269, 17262), (1701, 12878), (1918, 11421), (1974, 11097), (2466, 8883), (2538, 8631), (2877, 7614), (2961, 7398), (3402, 6439), (3699, 5922), (3807, 5754)]