21131088

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1291}}^1$

素因数の和:1344

約数の個数: 80

約数和(自身を含む): 61519872

約数和(自身を除く): 40388784

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 31, 33, 44, 48, 62, 66, 88, 93, 124, 132, 176, 186, 248, 264, 341, 372, 496, 528, 682, 744, 1023, 1291, 1364, 1488, 2046, 2582, 2728, 3873, 4092, 5164, 5456, 7746, 8184, 10328, 14201, 15492, 16368, 20656, 28402, 30984, 40021, 42603, 56804, 61968, 80042, 85206, 113608, 120063, 160084, 170412, 227216, 240126, 320168, 340824, 440231, 480252, 640336, 681648, 880462, 960504, 1320693, 1760924, 1921008, 2641386, 3521848, 5282772, 7043696, 10565544, 21131088]

約数ペア:

[(1, 21131088), (2, 10565544), (3, 7043696), (4, 5282772), (6, 3521848), (8, 2641386), (11, 1921008), (12, 1760924), (16, 1320693), (22, 960504), (24, 880462), (31, 681648), (33, 640336), (44, 480252), (48, 440231), (62, 340824), (66, 320168), (88, 240126), (93, 227216), (124, 170412), (132, 160084), (176, 120063), (186, 113608), (248, 85206), (264, 80042), (341, 61968), (372, 56804), (496, 42603), (528, 40021), (682, 30984), (744, 28402), (1023, 20656), (1291, 16368), (1364, 15492), (1488, 14201), (2046, 10328), (2582, 8184), (2728, 7746), (3873, 5456), (4092, 5164)]