28257240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{21407}}^1$

素因数の和:21432

約数の個数: 64

約数和(自身を含む): 92482560

約数和(自身を除く): 64225320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 20, 22, 24, 30, 33, 40, 44, 55, 60, 66, 88, 110, 120, 132, 165, 220, 264, 330, 440, 660, 1320, 21407, 42814, 64221, 85628, 107035, 128442, 171256, 214070, 235477, 256884, 321105, 428140, 470954, 513768, 642210, 706431, 856280, 941908, 1177385, 1284420, 1412862, 1883816, 2354770, 2568840, 2825724, 3532155, 4709540, 5651448, 7064310, 9419080, 14128620, 28257240]

約数ペア:

[(1, 28257240), (2, 14128620), (3, 9419080), (4, 7064310), (5, 5651448), (6, 4709540), (8, 3532155), (10, 2825724), (11, 2568840), (12, 2354770), (15, 1883816), (20, 1412862), (22, 1284420), (24, 1177385), (30, 941908), (33, 856280), (40, 706431), (44, 642210), (55, 513768), (60, 470954), (66, 428140), (88, 321105), (110, 256884), (120, 235477), (132, 214070), (165, 171256), (220, 128442), (264, 107035), (330, 85628), (440, 64221), (660, 42814), (1320, 21407)]