20371888

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{227}}^1$

素因数の和:385

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 20339792

約数列:

[1, 2, 4, 8, 16, 71, 79, 142, 158, 227, 284, 316, 454, 568, 632, 908, 1136, 1264, 1816, 3632, 5609, 11218, 16117, 17933, 22436, 32234, 35866, 44872, 64468, 71732, 89744, 128936, 143464, 257872, 286928, 1273243, 2546486, 5092972, 10185944, 20371888]

約数ペア:

[(1, 20371888), (2, 10185944), (4, 5092972), (8, 2546486), (16, 1273243), (71, 286928), (79, 257872), (142, 143464), (158, 128936), (227, 89744), (284, 71732), (316, 64468), (454, 44872), (568, 35866), (632, 32234), (908, 22436), (1136, 17933), (1264, 16117), (1816, 11218), (3632, 5609)]