28121709

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:190

約数の個数: 64

約数和(自身を含む): 50135040

約数和(自身を除く): 22013331

約数列:

[1, 3, 7, 11, 21, 23, 33, 67, 69, 77, 79, 161, 201, 231, 237, 253, 469, 483, 553, 737, 759, 869, 1407, 1541, 1659, 1771, 1817, 2211, 2607, 4623, 5159, 5293, 5313, 5451, 6083, 10787, 12719, 15477, 15879, 16951, 18249, 19987, 32361, 37051, 38157, 50853, 58223, 59961, 111153, 118657, 121739, 139909, 174669, 355971, 365217, 407561, 419727, 852173, 1222683, 1339129, 2556519, 4017387, 9373903, 28121709]

約数ペア:

[(1, 28121709), (3, 9373903), (7, 4017387), (11, 2556519), (21, 1339129), (23, 1222683), (33, 852173), (67, 419727), (69, 407561), (77, 365217), (79, 355971), (161, 174669), (201, 139909), (231, 121739), (237, 118657), (253, 111153), (469, 59961), (483, 58223), (553, 50853), (737, 38157), (759, 37051), (869, 32361), (1407, 19987), (1541, 18249), (1659, 16951), (1771, 15879), (1817, 15477), (2211, 12719), (2607, 10787), (4623, 6083), (5159, 5451), (5293, 5313)]