21360585

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{397}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 36450432

約数和(自身を除く): 15089847

約数列:

[1, 3, 5, 15, 17, 51, 85, 211, 255, 397, 633, 1055, 1191, 1985, 3165, 3587, 5955, 6749, 10761, 17935, 20247, 33745, 53805, 83767, 101235, 251301, 418835, 1256505, 1424039, 4272117, 7120195, 21360585]

約数ペア:

[(1, 21360585), (3, 7120195), (5, 4272117), (15, 1424039), (17, 1256505), (51, 418835), (85, 251301), (211, 101235), (255, 83767), (397, 53805), (633, 33745), (1055, 20247), (1191, 17935), (1985, 10761), (3165, 6749), (3587, 5955)]