20837740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1933}}^1$

素因数の和:1967

約数の個数: 72

約数和(自身を含む): 55559952

約数和(自身を除く): 34722212

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 49, 55, 70, 77, 98, 110, 140, 154, 196, 220, 245, 308, 385, 490, 539, 770, 980, 1078, 1540, 1933, 2156, 2695, 3866, 5390, 7732, 9665, 10780, 13531, 19330, 21263, 27062, 38660, 42526, 54124, 67655, 85052, 94717, 106315, 135310, 148841, 189434, 212630, 270620, 297682, 378868, 425260, 473585, 595364, 744205, 947170, 1041887, 1488410, 1894340, 2083774, 2976820, 4167548, 5209435, 10418870, 20837740]

約数ペア:

[(1, 20837740), (2, 10418870), (4, 5209435), (5, 4167548), (7, 2976820), (10, 2083774), (11, 1894340), (14, 1488410), (20, 1041887), (22, 947170), (28, 744205), (35, 595364), (44, 473585), (49, 425260), (55, 378868), (70, 297682), (77, 270620), (98, 212630), (110, 189434), (140, 148841), (154, 135310), (196, 106315), (220, 94717), (245, 85052), (308, 67655), (385, 54124), (490, 42526), (539, 38660), (770, 27062), (980, 21263), (1078, 19330), (1540, 13531), (1933, 10780), (2156, 9665), (2695, 7732), (3866, 5390)]