21216654

素因数分解:

$2^1\times 3^4\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{113}}^1$

素因数の和:207

約数の個数: 80

約数和(自身を含む): 51313680

約数和(自身を除く): 30097026

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 61, 81, 113, 114, 122, 162, 171, 183, 226, 339, 342, 366, 513, 549, 678, 1017, 1026, 1098, 1159, 1539, 1647, 2034, 2147, 2318, 3051, 3078, 3294, 3477, 4294, 4941, 6102, 6441, 6893, 6954, 9153, 9882, 10431, 12882, 13786, 18306, 19323, 20679, 20862, 31293, 38646, 41358, 57969, 62037, 62586, 93879, 115938, 124074, 130967, 173907, 186111, 187758, 261934, 347814, 372222, 392901, 558333, 785802, 1116666, 1178703, 2357406, 3536109, 7072218, 10608327, 21216654]

約数ペア:

[(1, 21216654), (2, 10608327), (3, 7072218), (6, 3536109), (9, 2357406), (18, 1178703), (19, 1116666), (27, 785802), (38, 558333), (54, 392901), (57, 372222), (61, 347814), (81, 261934), (113, 187758), (114, 186111), (122, 173907), (162, 130967), (171, 124074), (183, 115938), (226, 93879), (339, 62586), (342, 62037), (366, 57969), (513, 41358), (549, 38646), (678, 31293), (1017, 20862), (1026, 20679), (1098, 19323), (1159, 18306), (1539, 13786), (1647, 12882), (2034, 10431), (2147, 9882), (2318, 9153), (3051, 6954), (3078, 6893), (3294, 6441), (3477, 6102), (4294, 4941)]