21000994564

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{653}}^1\times {\mathrm{3673}}^1$

素因数の和:4540

約数の個数: 48

約数和(自身を含む): 40366972800

約数和(自身を除く): 19365978236

約数列:

[1, 2, 4, 11, 22, 44, 199, 398, 653, 796, 1306, 2189, 2612, 3673, 4378, 7183, 7346, 8756, 14366, 14692, 28732, 40403, 80806, 129947, 161612, 259894, 519788, 730927, 1429417, 1461854, 2398469, 2858834, 2923708, 4796938, 5717668, 8040197, 9593876, 16080394, 26383159, 32160788, 52766318, 105532636, 477295331, 954590662, 1909181324, 5250248641, 10500497282, 21000994564]

約数ペア:

[(1, 21000994564), (2, 10500497282), (4, 5250248641), (11, 1909181324), (22, 954590662), (44, 477295331), (199, 105532636), (398, 52766318), (653, 32160788), (796, 26383159), (1306, 16080394), (2189, 9593876), (2612, 8040197), (3673, 5717668), (4378, 4796938), (7183, 2923708), (7346, 2858834), (8756, 2398469), (14366, 1461854), (14692, 1429417), (28732, 730927), (40403, 519788), (80806, 259894), (129947, 161612)]