20544420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{26339}}^1$

素因数の和:26364

約数の個数: 48

約数和(自身を含む): 61951680

約数和(自身を除く): 41407260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 26339, 52678, 79017, 105356, 131695, 158034, 263390, 316068, 342407, 395085, 526780, 684814, 790170, 1027221, 1369628, 1580340, 1712035, 2054442, 3424070, 4108884, 5136105, 6848140, 10272210, 20544420]

約数ペア:

[(1, 20544420), (2, 10272210), (3, 6848140), (4, 5136105), (5, 4108884), (6, 3424070), (10, 2054442), (12, 1712035), (13, 1580340), (15, 1369628), (20, 1027221), (26, 790170), (30, 684814), (39, 526780), (52, 395085), (60, 342407), (65, 316068), (78, 263390), (130, 158034), (156, 131695), (195, 105356), (260, 79017), (390, 52678), (780, 26339)]