21913918

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1153}}^1$

素因数の和:1228

約数の個数: 32

約数和(自身を含む): 38386656

約数和(自身を除く): 16472738

約数列:

[1, 2, 13, 17, 26, 34, 43, 86, 221, 442, 559, 731, 1118, 1153, 1462, 2306, 9503, 14989, 19006, 19601, 29978, 39202, 49579, 99158, 254813, 509626, 644527, 842843, 1289054, 1685686, 10956959, 21913918]

約数ペア:

[(1, 21913918), (2, 10956959), (13, 1685686), (17, 1289054), (26, 842843), (34, 644527), (43, 509626), (86, 254813), (221, 99158), (442, 49579), (559, 39202), (731, 29978), (1118, 19601), (1153, 19006), (1462, 14989), (2306, 9503)]