21969640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{1019}}^1$

素因数の和:1055

約数の個数: 96

約数和(自身を含む): 62791200

約数和(自身を除く): 40821560

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 140, 154, 196, 220, 245, 280, 308, 385, 392, 440, 490, 539, 616, 770, 980, 1019, 1078, 1540, 1960, 2038, 2156, 2695, 3080, 4076, 4312, 5095, 5390, 7133, 8152, 10190, 10780, 11209, 14266, 20380, 21560, 22418, 28532, 35665, 40760, 44836, 49931, 56045, 57064, 71330, 78463, 89672, 99862, 112090, 142660, 156926, 199724, 224180, 249655, 285320, 313852, 392315, 399448, 448360, 499310, 549241, 627704, 784630, 998620, 1098482, 1569260, 1997240, 2196964, 2746205, 3138520, 4393928, 5492410, 10984820, 21969640]

約数ペア:

[(1, 21969640), (2, 10984820), (4, 5492410), (5, 4393928), (7, 3138520), (8, 2746205), (10, 2196964), (11, 1997240), (14, 1569260), (20, 1098482), (22, 998620), (28, 784630), (35, 627704), (40, 549241), (44, 499310), (49, 448360), (55, 399448), (56, 392315), (70, 313852), (77, 285320), (88, 249655), (98, 224180), (110, 199724), (140, 156926), (154, 142660), (196, 112090), (220, 99862), (245, 89672), (280, 78463), (308, 71330), (385, 57064), (392, 56045), (440, 49931), (490, 44836), (539, 40760), (616, 35665), (770, 28532), (980, 22418), (1019, 21560), (1078, 20380), (1540, 14266), (1960, 11209), (2038, 10780), (2156, 10190), (2695, 8152), (3080, 7133), (4076, 5390), (4312, 5095)]