42720279

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:487

約数の個数: 32

約数和(自身を含む): 67060224

約数和(自身を除く): 24339945

約数列:

[1, 3, 7, 21, 53, 131, 159, 293, 371, 393, 879, 917, 1113, 2051, 2751, 6153, 6943, 15529, 20829, 38383, 46587, 48601, 108703, 115149, 145803, 268681, 326109, 806043, 2034299, 6102897, 14240093, 42720279]

約数ペア:

[(1, 42720279), (3, 14240093), (7, 6102897), (21, 2034299), (53, 806043), (131, 326109), (159, 268681), (293, 145803), (371, 115149), (393, 108703), (879, 48601), (917, 46587), (1113, 38383), (2051, 20829), (2751, 15529), (6153, 6943)]