21686616

素因数分解:

$2^3\times 3^4\times 7^2\times {\mathrm{683}}^1$

素因数の和:715

約数の個数: 120

約数和(自身を含む): 70763220

約数和(自身を除く): 49076604

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 49, 54, 56, 63, 72, 81, 84, 98, 108, 126, 147, 162, 168, 189, 196, 216, 252, 294, 324, 378, 392, 441, 504, 567, 588, 648, 683, 756, 882, 1134, 1176, 1323, 1366, 1512, 1764, 2049, 2268, 2646, 2732, 3528, 3969, 4098, 4536, 4781, 5292, 5464, 6147, 7938, 8196, 9562, 10584, 12294, 14343, 15876, 16392, 18441, 19124, 24588, 28686, 31752, 33467, 36882, 38248, 43029, 49176, 55323, 57372, 66934, 73764, 86058, 100401, 110646, 114744, 129087, 133868, 147528, 172116, 200802, 221292, 258174, 267736, 301203, 344232, 387261, 401604, 442584, 516348, 602406, 774522, 803208, 903609, 1032696, 1204812, 1549044, 1807218, 2409624, 2710827, 3098088, 3614436, 5421654, 7228872, 10843308, 21686616]

約数ペア:

[(1, 21686616), (2, 10843308), (3, 7228872), (4, 5421654), (6, 3614436), (7, 3098088), (8, 2710827), (9, 2409624), (12, 1807218), (14, 1549044), (18, 1204812), (21, 1032696), (24, 903609), (27, 803208), (28, 774522), (36, 602406), (42, 516348), (49, 442584), (54, 401604), (56, 387261), (63, 344232), (72, 301203), (81, 267736), (84, 258174), (98, 221292), (108, 200802), (126, 172116), (147, 147528), (162, 133868), (168, 129087), (189, 114744), (196, 110646), (216, 100401), (252, 86058), (294, 73764), (324, 66934), (378, 57372), (392, 55323), (441, 49176), (504, 43029), (567, 38248), (588, 36882), (648, 33467), (683, 31752), (756, 28686), (882, 24588), (1134, 19124), (1176, 18441), (1323, 16392), (1366, 15876), (1512, 14343), (1764, 12294), (2049, 10584), (2268, 9562), (2646, 8196), (2732, 7938), (3528, 6147), (3969, 5464), (4098, 5292), (4536, 4781)]