21428985

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{179}}^1\times {\mathrm{347}}^1$

素因数の和:557

約数の個数: 32

約数和(自身を含む): 36080640

約数和(自身を除く): 14651655

約数列:

[1, 3, 5, 15, 23, 69, 115, 179, 345, 347, 537, 895, 1041, 1735, 2685, 4117, 5205, 7981, 12351, 20585, 23943, 39905, 61755, 62113, 119715, 186339, 310565, 931695, 1428599, 4285797, 7142995, 21428985]

約数ペア:

[(1, 21428985), (3, 7142995), (5, 4285797), (15, 1428599), (23, 931695), (69, 310565), (115, 186339), (179, 119715), (345, 62113), (347, 61755), (537, 39905), (895, 23943), (1041, 20585), (1735, 12351), (2685, 7981), (4117, 5205)]