21038836

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{359}}^1$

素因数の和:413

約数の個数: 72

約数和(自身を含む): 48263040

約数和(自身を除く): 27224204

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 46, 49, 52, 91, 92, 98, 161, 182, 196, 299, 322, 359, 364, 598, 637, 644, 718, 1127, 1196, 1274, 1436, 2093, 2254, 2513, 2548, 4186, 4508, 4667, 5026, 8257, 8372, 9334, 10052, 14651, 16514, 17591, 18668, 29302, 32669, 33028, 35182, 57799, 58604, 65338, 70364, 107341, 115598, 130676, 214682, 228683, 231196, 404593, 429364, 457366, 751387, 809186, 914732, 1502774, 1618372, 3005548, 5259709, 10519418, 21038836]

約数ペア:

[(1, 21038836), (2, 10519418), (4, 5259709), (7, 3005548), (13, 1618372), (14, 1502774), (23, 914732), (26, 809186), (28, 751387), (46, 457366), (49, 429364), (52, 404593), (91, 231196), (92, 228683), (98, 214682), (161, 130676), (182, 115598), (196, 107341), (299, 70364), (322, 65338), (359, 58604), (364, 57799), (598, 35182), (637, 33028), (644, 32669), (718, 29302), (1127, 18668), (1196, 17591), (1274, 16514), (1436, 14651), (2093, 10052), (2254, 9334), (2513, 8372), (2548, 8257), (4186, 5026), (4508, 4667)]