20882526

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 49728000

約数和(自身を除く): 28845474

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 73, 98, 139, 146, 147, 219, 278, 294, 343, 417, 438, 511, 686, 834, 973, 1022, 1029, 1533, 1946, 2058, 2919, 3066, 3577, 5838, 6811, 7154, 10147, 10731, 13622, 20294, 20433, 21462, 25039, 30441, 40866, 47677, 50078, 60882, 71029, 75117, 95354, 142058, 143031, 150234, 213087, 286062, 426174, 497203, 994406, 1491609, 2983218, 3480421, 6960842, 10441263, 20882526]

約数ペア:

[(1, 20882526), (2, 10441263), (3, 6960842), (6, 3480421), (7, 2983218), (14, 1491609), (21, 994406), (42, 497203), (49, 426174), (73, 286062), (98, 213087), (139, 150234), (146, 143031), (147, 142058), (219, 95354), (278, 75117), (294, 71029), (343, 60882), (417, 50078), (438, 47677), (511, 40866), (686, 30441), (834, 25039), (973, 21462), (1022, 20433), (1029, 20294), (1533, 13622), (1946, 10731), (2058, 10147), (2919, 7154), (3066, 6811), (3577, 5838)]