21609822

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{379}}^1$

素因数の和:457

約数の個数: 64

約数和(自身を含む): 50561280

約数和(自身を除く): 28951458

約数列:

[1, 2, 3, 6, 13, 17, 26, 34, 39, 43, 51, 78, 86, 102, 129, 221, 258, 379, 442, 559, 663, 731, 758, 1118, 1137, 1326, 1462, 1677, 2193, 2274, 3354, 4386, 4927, 6443, 9503, 9854, 12886, 14781, 16297, 19006, 19329, 28509, 29562, 32594, 38658, 48891, 57018, 83759, 97782, 167518, 211861, 251277, 277049, 423722, 502554, 554098, 635583, 831147, 1271166, 1662294, 3601637, 7203274, 10804911, 21609822]

約数ペア:

[(1, 21609822), (2, 10804911), (3, 7203274), (6, 3601637), (13, 1662294), (17, 1271166), (26, 831147), (34, 635583), (39, 554098), (43, 502554), (51, 423722), (78, 277049), (86, 251277), (102, 211861), (129, 167518), (221, 97782), (258, 83759), (379, 57018), (442, 48891), (559, 38658), (663, 32594), (731, 29562), (758, 28509), (1118, 19329), (1137, 19006), (1326, 16297), (1462, 14781), (1677, 12886), (2193, 9854), (2274, 9503), (3354, 6443), (4386, 4927)]