19840511859

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{647}}^1$

素因数の和:1016

約数の個数: 64

約数和(自身を含む): 31137841152

約数和(自身を除く): 11297329293

約数列:

[1, 3, 7, 21, 71, 131, 157, 213, 393, 471, 497, 647, 917, 1099, 1491, 1941, 2751, 3297, 4529, 9301, 11147, 13587, 20567, 27903, 33441, 45937, 61701, 65107, 78029, 84757, 101579, 137811, 143969, 195321, 234087, 254271, 304737, 321559, 431907, 593299, 711053, 964677, 1460257, 1779897, 2133159, 4380771, 6017747, 7212109, 10221799, 13306849, 18053241, 21636327, 30665397, 39920547, 42124229, 50484763, 93147943, 126372687, 151454289, 279443829, 944786279, 2834358837, 6613503953, 19840511859]

約数ペア:

[(1, 19840511859), (3, 6613503953), (7, 2834358837), (21, 944786279), (71, 279443829), (131, 151454289), (157, 126372687), (213, 93147943), (393, 50484763), (471, 42124229), (497, 39920547), (647, 30665397), (917, 21636327), (1099, 18053241), (1491, 13306849), (1941, 10221799), (2751, 7212109), (3297, 6017747), (4529, 4380771), (9301, 2133159), (11147, 1779897), (13587, 1460257), (20567, 964677), (27903, 711053), (33441, 593299), (45937, 431907), (61701, 321559), (65107, 304737), (78029, 254271), (84757, 234087), (101579, 195321), (137811, 143969)]