21074201954

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{73}}^2\times {\mathrm{89}}^1\times {\mathrm{1709}}^1$

素因数の和:1959

約数の個数: 48

約数和(自身を含む): 34923911400

約数和(自身を除く): 13849709446

約数列:

[1, 2, 13, 26, 73, 89, 146, 178, 949, 1157, 1709, 1898, 2314, 3418, 5329, 6497, 10658, 12994, 22217, 44434, 69277, 84461, 124757, 138554, 152101, 168922, 249514, 304202, 474281, 948562, 1621841, 1977313, 3243682, 3954626, 6165653, 9107261, 11103373, 12331306, 18214522, 22206746, 118394393, 144343849, 236788786, 288687698, 810546229, 1621092458, 10537100977, 21074201954]

約数ペア:

[(1, 21074201954), (2, 10537100977), (13, 1621092458), (26, 810546229), (73, 288687698), (89, 236788786), (146, 144343849), (178, 118394393), (949, 22206746), (1157, 18214522), (1709, 12331306), (1898, 11103373), (2314, 9107261), (3418, 6165653), (5329, 3954626), (6497, 3243682), (10658, 1977313), (12994, 1621841), (22217, 948562), (44434, 474281), (69277, 304202), (84461, 249514), (124757, 168922), (138554, 152101)]