19809846

素因数分解:

$2^1\times 3^7\times 7^1\times {\mathrm{647}}^1$

素因数の和:677

約数の個数: 64

約数和(自身を含む): 51010560

約数和(自身を除く): 31200714

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 81, 126, 162, 189, 243, 378, 486, 567, 647, 729, 1134, 1294, 1458, 1701, 1941, 2187, 3402, 3882, 4374, 4529, 5103, 5823, 9058, 10206, 11646, 13587, 15309, 17469, 27174, 30618, 34938, 40761, 52407, 81522, 104814, 122283, 157221, 244566, 314442, 366849, 471663, 733698, 943326, 1100547, 1414989, 2201094, 2829978, 3301641, 6603282, 9904923, 19809846]

約数ペア:

[(1, 19809846), (2, 9904923), (3, 6603282), (6, 3301641), (7, 2829978), (9, 2201094), (14, 1414989), (18, 1100547), (21, 943326), (27, 733698), (42, 471663), (54, 366849), (63, 314442), (81, 244566), (126, 157221), (162, 122283), (189, 104814), (243, 81522), (378, 52407), (486, 40761), (567, 34938), (647, 30618), (729, 27174), (1134, 17469), (1294, 15309), (1458, 13587), (1701, 11646), (1941, 10206), (2187, 9058), (3402, 5823), (3882, 5103), (4374, 4529)]