21656586

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 51425280

約数和(自身を除く): 29768694

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 61, 79, 107, 122, 158, 183, 214, 237, 321, 366, 427, 474, 553, 642, 749, 854, 1106, 1281, 1498, 1659, 2247, 2562, 3318, 4494, 4819, 6527, 8453, 9638, 13054, 14457, 16906, 19581, 25359, 28914, 33733, 39162, 45689, 50718, 59171, 67466, 91378, 101199, 118342, 137067, 177513, 202398, 274134, 355026, 515633, 1031266, 1546899, 3093798, 3609431, 7218862, 10828293, 21656586]

約数ペア:

[(1, 21656586), (2, 10828293), (3, 7218862), (6, 3609431), (7, 3093798), (14, 1546899), (21, 1031266), (42, 515633), (61, 355026), (79, 274134), (107, 202398), (122, 177513), (158, 137067), (183, 118342), (214, 101199), (237, 91378), (321, 67466), (366, 59171), (427, 50718), (474, 45689), (553, 39162), (642, 33733), (749, 28914), (854, 25359), (1106, 19581), (1281, 16906), (1498, 14457), (1659, 13054), (2247, 9638), (2562, 8453), (3318, 6527), (4494, 4819)]