18449991

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 33423360

約数和(自身を除く): 14973369

約数列:

[1, 3, 7, 9, 21, 27, 31, 47, 63, 67, 93, 141, 189, 201, 217, 279, 329, 423, 469, 603, 651, 837, 987, 1269, 1407, 1457, 1809, 1953, 2077, 2961, 3149, 4221, 4371, 5859, 6231, 8883, 9447, 10199, 12663, 13113, 14539, 18693, 22043, 28341, 30597, 39339, 43617, 56079, 66129, 85023, 91791, 97619, 130851, 198387, 275373, 292857, 392553, 595161, 683333, 878571, 2049999, 2635713, 6149997, 18449991]

約数ペア:

[(1, 18449991), (3, 6149997), (7, 2635713), (9, 2049999), (21, 878571), (27, 683333), (31, 595161), (47, 392553), (63, 292857), (67, 275373), (93, 198387), (141, 130851), (189, 97619), (201, 91791), (217, 85023), (279, 66129), (329, 56079), (423, 43617), (469, 39339), (603, 30597), (651, 28341), (837, 22043), (987, 18693), (1269, 14539), (1407, 13113), (1457, 12663), (1809, 10199), (1953, 9447), (2077, 8883), (2961, 6231), (3149, 5859), (4221, 4371)]