28397265

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1361}}^1$

素因数の和:1489

約数の個数: 32

約数和(自身を含む): 49424256

約数和(自身を除く): 21026991

約数列:

[1, 3, 5, 13, 15, 39, 65, 107, 195, 321, 535, 1361, 1391, 1605, 4083, 4173, 6805, 6955, 17693, 20415, 20865, 53079, 88465, 145627, 265395, 436881, 728135, 1893151, 2184405, 5679453, 9465755, 28397265]

約数ペア:

[(1, 28397265), (3, 9465755), (5, 5679453), (13, 2184405), (15, 1893151), (39, 728135), (65, 436881), (107, 265395), (195, 145627), (321, 88465), (535, 53079), (1361, 20865), (1391, 20415), (1605, 17693), (4083, 6955), (4173, 6805)]