19513683

素因数分解:

$3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{67}}^2$

素因数の和:173

約数の個数: 48

約数和(自身を含む): 34997760

約数和(自身を除く): 15484077

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 67, 69, 161, 189, 201, 207, 469, 483, 603, 621, 1407, 1449, 1541, 1809, 4221, 4347, 4489, 4623, 10787, 12663, 13467, 13869, 31423, 32361, 40401, 41607, 94269, 97083, 103247, 121203, 282807, 291249, 309741, 722729, 848421, 929223, 2168187, 2787669, 6504561, 19513683]

約数ペア:

[(1, 19513683), (3, 6504561), (7, 2787669), (9, 2168187), (21, 929223), (23, 848421), (27, 722729), (63, 309741), (67, 291249), (69, 282807), (161, 121203), (189, 103247), (201, 97083), (207, 94269), (469, 41607), (483, 40401), (603, 32361), (621, 31423), (1407, 13869), (1449, 13467), (1541, 12663), (1809, 10787), (4221, 4623), (4347, 4489)]