21167005904

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{181}}^1\times {\mathrm{664459}}^1$

素因数の和:664659

約数の個数: 40

約数和(自身を含む): 44986599840

約数和(自身を除く): 23819593936

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 181, 362, 724, 1448, 1991, 2896, 3982, 7964, 15928, 31856, 664459, 1328918, 2657836, 5315672, 7309049, 10631344, 14618098, 29236196, 58472392, 116944784, 120267079, 240534158, 481068316, 962136632, 1322937869, 1924273264, 2645875738, 5291751476, 10583502952, 21167005904]

約数ペア:

[(1, 21167005904), (2, 10583502952), (4, 5291751476), (8, 2645875738), (11, 1924273264), (16, 1322937869), (22, 962136632), (44, 481068316), (88, 240534158), (176, 120267079), (181, 116944784), (362, 58472392), (724, 29236196), (1448, 14618098), (1991, 10631344), (2896, 7309049), (3982, 5315672), (7964, 2657836), (15928, 1328918), (31856, 664459)]