21612056

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{661}}^1$

素因数の和:795

約数の個数: 32

約数和(自身を含む): 41864880

約数和(自身を除く): 20252824

約数列:

[1, 2, 4, 8, 61, 67, 122, 134, 244, 268, 488, 536, 661, 1322, 2644, 4087, 5288, 8174, 16348, 32696, 40321, 44287, 80642, 88574, 161284, 177148, 322568, 354296, 2701507, 5403014, 10806028, 21612056]

約数ペア:

[(1, 21612056), (2, 10806028), (4, 5403014), (8, 2701507), (61, 354296), (67, 322568), (122, 177148), (134, 161284), (244, 88574), (268, 80642), (488, 44287), (536, 40321), (661, 32696), (1322, 16348), (2644, 8174), (4087, 5288)]