21878584

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{733}}^1$

素因数の和:800

約数の個数: 64

約数和(自身を含む): 51791040

約数和(自身を除く): 29912456

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 41, 52, 56, 82, 91, 104, 164, 182, 287, 328, 364, 533, 574, 728, 733, 1066, 1148, 1466, 2132, 2296, 2932, 3731, 4264, 5131, 5864, 7462, 9529, 10262, 14924, 19058, 20524, 29848, 30053, 38116, 41048, 60106, 66703, 76232, 120212, 133406, 210371, 240424, 266812, 390689, 420742, 533624, 781378, 841484, 1562756, 1682968, 2734823, 3125512, 5469646, 10939292, 21878584]

約数ペア:

[(1, 21878584), (2, 10939292), (4, 5469646), (7, 3125512), (8, 2734823), (13, 1682968), (14, 1562756), (26, 841484), (28, 781378), (41, 533624), (52, 420742), (56, 390689), (82, 266812), (91, 240424), (104, 210371), (164, 133406), (182, 120212), (287, 76232), (328, 66703), (364, 60106), (533, 41048), (574, 38116), (728, 30053), (733, 29848), (1066, 20524), (1148, 19058), (1466, 14924), (2132, 10262), (2296, 9529), (2932, 7462), (3731, 5864), (4264, 5131)]