2661939

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1$

素因数の和:120

約数の個数: 48

約数和(自身を含む): 4792320

約数和(自身を除く): 2130381

約数列:

[1, 3, 7, 9, 21, 29, 31, 47, 63, 87, 93, 141, 203, 217, 261, 279, 329, 423, 609, 651, 899, 987, 1363, 1457, 1827, 1953, 2697, 2961, 4089, 4371, 6293, 8091, 9541, 10199, 12267, 13113, 18879, 28623, 30597, 42253, 56637, 85869, 91791, 126759, 295771, 380277, 887313, 2661939]

約数ペア:

[(1, 2661939), (3, 887313), (7, 380277), (9, 295771), (21, 126759), (29, 91791), (31, 85869), (47, 56637), (63, 42253), (87, 30597), (93, 28623), (141, 18879), (203, 13113), (217, 12267), (261, 10199), (279, 9541), (329, 8091), (423, 6293), (609, 4371), (651, 4089), (899, 2961), (987, 2697), (1363, 1953), (1457, 1827)]