18712155

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{953}}^1$

素因数の和:996

約数の個数: 64

約数和(自身を含む): 39564288

約数和(自身を除く): 20852133

約数列:

[1, 3, 5, 7, 11, 15, 17, 21, 33, 35, 51, 55, 77, 85, 105, 119, 165, 187, 231, 255, 357, 385, 561, 595, 935, 953, 1155, 1309, 1785, 2805, 2859, 3927, 4765, 6545, 6671, 10483, 14295, 16201, 19635, 20013, 31449, 33355, 48603, 52415, 73381, 81005, 100065, 113407, 157245, 178211, 220143, 243015, 340221, 366905, 534633, 567035, 891055, 1100715, 1247477, 1701105, 2673165, 3742431, 6237385, 18712155]

約数ペア:

[(1, 18712155), (3, 6237385), (5, 3742431), (7, 2673165), (11, 1701105), (15, 1247477), (17, 1100715), (21, 891055), (33, 567035), (35, 534633), (51, 366905), (55, 340221), (77, 243015), (85, 220143), (105, 178211), (119, 157245), (165, 113407), (187, 100065), (231, 81005), (255, 73381), (357, 52415), (385, 48603), (561, 33355), (595, 31449), (935, 20013), (953, 19635), (1155, 16201), (1309, 14295), (1785, 10483), (2805, 6671), (2859, 6545), (3927, 4765)]