21238568

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{683}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 45061920

約数和(自身を除く): 23823352

約数列:

[1, 2, 4, 8, 13, 23, 26, 46, 52, 92, 104, 169, 184, 299, 338, 598, 676, 683, 1196, 1352, 1366, 2392, 2732, 3887, 5464, 7774, 8879, 15548, 15709, 17758, 31096, 31418, 35516, 62836, 71032, 115427, 125672, 204217, 230854, 408434, 461708, 816868, 923416, 1633736, 2654821, 5309642, 10619284, 21238568]

約数ペア:

[(1, 21238568), (2, 10619284), (4, 5309642), (8, 2654821), (13, 1633736), (23, 923416), (26, 816868), (46, 461708), (52, 408434), (92, 230854), (104, 204217), (169, 125672), (184, 115427), (299, 71032), (338, 62836), (598, 35516), (676, 31418), (683, 31096), (1196, 17758), (1352, 15709), (1366, 15548), (2392, 8879), (2732, 7774), (3887, 5464)]