21148432

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{521}}^1$

素因数の和:631

約数の個数: 40

約数和(自身を含む): 42720480

約数和(自身を除く): 21572048

約数列:

[1, 2, 4, 8, 16, 43, 59, 86, 118, 172, 236, 344, 472, 521, 688, 944, 1042, 2084, 2537, 4168, 5074, 8336, 10148, 20296, 22403, 30739, 40592, 44806, 61478, 89612, 122956, 179224, 245912, 358448, 491824, 1321777, 2643554, 5287108, 10574216, 21148432]

約数ペア:

[(1, 21148432), (2, 10574216), (4, 5287108), (8, 2643554), (16, 1321777), (43, 491824), (59, 358448), (86, 245912), (118, 179224), (172, 122956), (236, 89612), (344, 61478), (472, 44806), (521, 40592), (688, 30739), (944, 22403), (1042, 20296), (2084, 10148), (2537, 8336), (4168, 5074)]