20946978

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{563}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 51166080

約数和(自身を除く): 30219102

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 27, 39, 53, 54, 78, 106, 117, 159, 234, 318, 351, 477, 563, 689, 702, 954, 1126, 1378, 1431, 1689, 2067, 2862, 3378, 4134, 5067, 6201, 7319, 10134, 12402, 14638, 15201, 18603, 21957, 29839, 30402, 37206, 43914, 59678, 65871, 89517, 131742, 179034, 197613, 268551, 387907, 395226, 537102, 775814, 805653, 1163721, 1611306, 2327442, 3491163, 6982326, 10473489, 20946978]

約数ペア:

[(1, 20946978), (2, 10473489), (3, 6982326), (6, 3491163), (9, 2327442), (13, 1611306), (18, 1163721), (26, 805653), (27, 775814), (39, 537102), (53, 395226), (54, 387907), (78, 268551), (106, 197613), (117, 179034), (159, 131742), (234, 89517), (318, 65871), (351, 59678), (477, 43914), (563, 37206), (689, 30402), (702, 29839), (954, 21957), (1126, 18603), (1378, 15201), (1431, 14638), (1689, 12402), (2067, 10134), (2862, 7319), (3378, 6201), (4134, 5067)]