21085904

素因数分解:

$2^4\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2579}}^1$

素因数の和:2667

約数の個数: 40

約数和(自身を含む): 47348160

約数和(自身を除く): 26262256

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 73, 112, 146, 292, 511, 584, 1022, 1168, 2044, 2579, 4088, 5158, 8176, 10316, 18053, 20632, 36106, 41264, 72212, 144424, 188267, 288848, 376534, 753068, 1317869, 1506136, 2635738, 3012272, 5271476, 10542952, 21085904]

約数ペア:

[(1, 21085904), (2, 10542952), (4, 5271476), (7, 3012272), (8, 2635738), (14, 1506136), (16, 1317869), (28, 753068), (56, 376534), (73, 288848), (112, 188267), (146, 144424), (292, 72212), (511, 41264), (584, 36106), (1022, 20632), (1168, 18053), (2044, 10316), (2579, 8176), (4088, 5158)]