20551293

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{97}}^1$

素因数の和:191

約数の個数: 64

約数和(自身を含む): 37632000

約数和(自身を除く): 17080707

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 59, 63, 97, 133, 171, 177, 189, 291, 399, 413, 513, 531, 679, 873, 1121, 1197, 1239, 1593, 1843, 2037, 2619, 3363, 3591, 3717, 5529, 5723, 6111, 7847, 10089, 11151, 12901, 16587, 17169, 18333, 23541, 30267, 38703, 40061, 49761, 51507, 70623, 108737, 116109, 120183, 154521, 211869, 326211, 348327, 360549, 761159, 978633, 1081647, 2283477, 2935899, 6850431, 20551293]

約数ペア:

[(1, 20551293), (3, 6850431), (7, 2935899), (9, 2283477), (19, 1081647), (21, 978633), (27, 761159), (57, 360549), (59, 348327), (63, 326211), (97, 211869), (133, 154521), (171, 120183), (177, 116109), (189, 108737), (291, 70623), (399, 51507), (413, 49761), (513, 40061), (531, 38703), (679, 30267), (873, 23541), (1121, 18333), (1197, 17169), (1239, 16587), (1593, 12901), (1843, 11151), (2037, 10089), (2619, 7847), (3363, 6111), (3591, 5723), (3717, 5529)]