20508208

素因数分解:

$2^4\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2579}}^1$

素因数の和:2665

約数の個数: 40

約数和(自身を含む): 46068480

約数和(自身を除く): 25560272

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 71, 112, 142, 284, 497, 568, 994, 1136, 1988, 2579, 3976, 5158, 7952, 10316, 18053, 20632, 36106, 41264, 72212, 144424, 183109, 288848, 366218, 732436, 1281763, 1464872, 2563526, 2929744, 5127052, 10254104, 20508208]

約数ペア:

[(1, 20508208), (2, 10254104), (4, 5127052), (7, 2929744), (8, 2563526), (14, 1464872), (16, 1281763), (28, 732436), (56, 366218), (71, 288848), (112, 183109), (142, 144424), (284, 72212), (497, 41264), (568, 36106), (994, 20632), (1136, 18053), (1988, 10316), (2579, 7952), (3976, 5158)]