21581586

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{433}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 52496640

約数和(自身を除く): 30915054

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 54, 71, 78, 117, 142, 213, 234, 351, 426, 433, 639, 702, 866, 923, 1278, 1299, 1846, 1917, 2598, 2769, 3834, 3897, 5538, 5629, 7794, 8307, 11258, 11691, 16614, 16887, 23382, 24921, 30743, 33774, 49842, 50661, 61486, 92229, 101322, 151983, 184458, 276687, 303966, 399659, 553374, 799318, 830061, 1198977, 1660122, 2397954, 3596931, 7193862, 10790793, 21581586]

約数ペア:

[(1, 21581586), (2, 10790793), (3, 7193862), (6, 3596931), (9, 2397954), (13, 1660122), (18, 1198977), (26, 830061), (27, 799318), (39, 553374), (54, 399659), (71, 303966), (78, 276687), (117, 184458), (142, 151983), (213, 101322), (234, 92229), (351, 61486), (426, 50661), (433, 49842), (639, 33774), (702, 30743), (866, 24921), (923, 23382), (1278, 16887), (1299, 16614), (1846, 11691), (1917, 11258), (2598, 8307), (2769, 7794), (3834, 5629), (3897, 5538)]