21218274

素因数分解:

$2^1\times 3^9\times 7^2\times {\mathrm{11}}^1$

素因数の和:54

約数の個数: 120

約数和(自身を含む): 60583248

約数和(自身を除く): 39364974

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 27, 33, 42, 49, 54, 63, 66, 77, 81, 98, 99, 126, 147, 154, 162, 189, 198, 231, 243, 294, 297, 378, 441, 462, 486, 539, 567, 594, 693, 729, 882, 891, 1078, 1134, 1323, 1386, 1458, 1617, 1701, 1782, 2079, 2187, 2646, 2673, 3234, 3402, 3969, 4158, 4374, 4851, 5103, 5346, 6237, 6561, 7938, 8019, 9702, 10206, 11907, 12474, 13122, 14553, 15309, 16038, 18711, 19683, 23814, 24057, 29106, 30618, 35721, 37422, 39366, 43659, 45927, 48114, 56133, 71442, 72171, 87318, 91854, 107163, 112266, 130977, 137781, 144342, 168399, 214326, 216513, 261954, 275562, 321489, 336798, 392931, 433026, 505197, 642978, 785862, 964467, 1010394, 1178793, 1515591, 1928934, 2357586, 3031182, 3536379, 7072758, 10609137, 21218274]

約数ペア:

[(1, 21218274), (2, 10609137), (3, 7072758), (6, 3536379), (7, 3031182), (9, 2357586), (11, 1928934), (14, 1515591), (18, 1178793), (21, 1010394), (22, 964467), (27, 785862), (33, 642978), (42, 505197), (49, 433026), (54, 392931), (63, 336798), (66, 321489), (77, 275562), (81, 261954), (98, 216513), (99, 214326), (126, 168399), (147, 144342), (154, 137781), (162, 130977), (189, 112266), (198, 107163), (231, 91854), (243, 87318), (294, 72171), (297, 71442), (378, 56133), (441, 48114), (462, 45927), (486, 43659), (539, 39366), (567, 37422), (594, 35721), (693, 30618), (729, 29106), (882, 24057), (891, 23814), (1078, 19683), (1134, 18711), (1323, 16038), (1386, 15309), (1458, 14553), (1617, 13122), (1701, 12474), (1782, 11907), (2079, 10206), (2187, 9702), (2646, 8019), (2673, 7938), (3234, 6561), (3402, 6237), (3969, 5346), (4158, 5103), (4374, 4851)]