21747558

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1$

素因数の和:561

約数の個数: 64

約数和(自身を含む): 53084160

約数和(自身を除く): 31336602

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 47, 69, 94, 138, 141, 161, 282, 322, 329, 479, 483, 658, 958, 966, 987, 1081, 1437, 1974, 2162, 2874, 3243, 3353, 6486, 6706, 7567, 10059, 11017, 15134, 20118, 22034, 22513, 22701, 33051, 45026, 45402, 66102, 67539, 77119, 135078, 154238, 157591, 231357, 315182, 462714, 472773, 517799, 945546, 1035598, 1553397, 3106794, 3624593, 7249186, 10873779, 21747558]

約数ペア:

[(1, 21747558), (2, 10873779), (3, 7249186), (6, 3624593), (7, 3106794), (14, 1553397), (21, 1035598), (23, 945546), (42, 517799), (46, 472773), (47, 462714), (69, 315182), (94, 231357), (138, 157591), (141, 154238), (161, 135078), (282, 77119), (322, 67539), (329, 66102), (479, 45402), (483, 45026), (658, 33051), (958, 22701), (966, 22513), (987, 22034), (1081, 20118), (1437, 15134), (1974, 11017), (2162, 10059), (2874, 7567), (3243, 6706), (3353, 6486)]