21139534

素因数分解:

$2^1\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{283}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 36499680

約数和(自身を除く): 15360146

約数列:

[1, 2, 13, 17, 26, 34, 169, 221, 283, 338, 442, 566, 2197, 2873, 3679, 4394, 4811, 5746, 7358, 9622, 37349, 47827, 62543, 74698, 95654, 125086, 621751, 813059, 1243502, 1626118, 10569767, 21139534]

約数ペア:

[(1, 21139534), (2, 10569767), (13, 1626118), (17, 1243502), (26, 813059), (34, 621751), (169, 125086), (221, 95654), (283, 74698), (338, 62543), (442, 47827), (566, 37349), (2197, 9622), (2873, 7358), (3679, 5746), (4394, 4811)]