21285327

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{347}}^1$

素因数の和:507

約数の個数: 32

約数和(自身を含む): 34209792

約数和(自身を除く): 12924465

約数列:

[1, 3, 7, 21, 23, 69, 127, 161, 347, 381, 483, 889, 1041, 2429, 2667, 2921, 7287, 7981, 8763, 20447, 23943, 44069, 55867, 61341, 132207, 167601, 308483, 925449, 1013587, 3040761, 7095109, 21285327]

約数ペア:

[(1, 21285327), (3, 7095109), (7, 3040761), (21, 1013587), (23, 925449), (69, 308483), (127, 167601), (161, 132207), (347, 61341), (381, 55867), (483, 44069), (889, 23943), (1041, 20447), (2429, 8763), (2667, 7981), (2921, 7287)]