20871928

素因数分解:

$2^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1093}}^1$

素因数の和:1148

約数の個数: 64

約数和(自身を含む): 50411520

約数和(自身を除く): 29539592

約数列:

[1, 2, 4, 7, 8, 11, 14, 22, 28, 31, 44, 56, 62, 77, 88, 124, 154, 217, 248, 308, 341, 434, 616, 682, 868, 1093, 1364, 1736, 2186, 2387, 2728, 4372, 4774, 7651, 8744, 9548, 12023, 15302, 19096, 24046, 30604, 33883, 48092, 61208, 67766, 84161, 96184, 135532, 168322, 237181, 271064, 336644, 372713, 474362, 673288, 745426, 948724, 1490852, 1897448, 2608991, 2981704, 5217982, 10435964, 20871928]

約数ペア:

[(1, 20871928), (2, 10435964), (4, 5217982), (7, 2981704), (8, 2608991), (11, 1897448), (14, 1490852), (22, 948724), (28, 745426), (31, 673288), (44, 474362), (56, 372713), (62, 336644), (77, 271064), (88, 237181), (124, 168322), (154, 135532), (217, 96184), (248, 84161), (308, 67766), (341, 61208), (434, 48092), (616, 33883), (682, 30604), (868, 24046), (1093, 19096), (1364, 15302), (1736, 12023), (2186, 9548), (2387, 8744), (2728, 7651), (4372, 4774)]