87721569

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{509}}^1$

素因数の和:1022

約数の個数: 32

約数和(自身を含む): 140515200

約数和(自身を除く): 52793631

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 491, 509, 1473, 1527, 4419, 4581, 6383, 6617, 13257, 13743, 19149, 19851, 57447, 59553, 172341, 178659, 249919, 749757, 2249271, 3248947, 6747813, 9746841, 29240523, 87721569]

約数ペア:

[(1, 87721569), (3, 29240523), (9, 9746841), (13, 6747813), (27, 3248947), (39, 2249271), (117, 749757), (351, 249919), (491, 178659), (509, 172341), (1473, 59553), (1527, 57447), (4419, 19851), (4581, 19149), (6383, 13743), (6617, 13257)]