20459637

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1$

素因数の和:258

約数の個数: 48

約数和(自身を含む): 34632000

約数和(自身を除く): 14172363

約数列:

[1, 3, 9, 11, 19, 33, 57, 73, 99, 149, 171, 209, 219, 447, 627, 657, 803, 1341, 1387, 1639, 1881, 2409, 2831, 4161, 4917, 7227, 8493, 10877, 12483, 14751, 15257, 25479, 31141, 32631, 45771, 93423, 97893, 119647, 137313, 206663, 280269, 358941, 619989, 1076823, 1859967, 2273293, 6819879, 20459637]

約数ペア:

[(1, 20459637), (3, 6819879), (9, 2273293), (11, 1859967), (19, 1076823), (33, 619989), (57, 358941), (73, 280269), (99, 206663), (149, 137313), (171, 119647), (209, 97893), (219, 93423), (447, 45771), (627, 32631), (657, 31141), (803, 25479), (1341, 15257), (1387, 14751), (1639, 12483), (1881, 10877), (2409, 8493), (2831, 7227), (4161, 4917)]