21599565

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{431}}^1$

素因数の和:709

約数の個数: 32

約数和(自身を含む): 37449216

約数和(自身を除く): 15849651

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 257, 431, 771, 1285, 1293, 2155, 3341, 3855, 5603, 6465, 10023, 16705, 16809, 28015, 50115, 84045, 110767, 332301, 553835, 1439971, 1661505, 4319913, 7199855, 21599565]

約数ペア:

[(1, 21599565), (3, 7199855), (5, 4319913), (13, 1661505), (15, 1439971), (39, 553835), (65, 332301), (195, 110767), (257, 84045), (431, 50115), (771, 28015), (1285, 16809), (1293, 16705), (2155, 10023), (3341, 6465), (3855, 5603)]