21458138

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{337}}^1$

素因数の和:462

約数の個数: 32

約数和(自身を含む): 36341760

約数和(自身を除く): 14883622

約数列:

[1, 2, 13, 26, 31, 62, 79, 158, 337, 403, 674, 806, 1027, 2054, 2449, 4381, 4898, 8762, 10447, 20894, 26623, 31837, 53246, 63674, 135811, 271622, 346099, 692198, 825313, 1650626, 10729069, 21458138]

約数ペア:

[(1, 21458138), (2, 10729069), (13, 1650626), (26, 825313), (31, 692198), (62, 346099), (79, 271622), (158, 135811), (337, 63674), (403, 53246), (674, 31837), (806, 26623), (1027, 20894), (2054, 10447), (2449, 8762), (4381, 4898)]