21538534

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{5261}}^1$

素因数の和:5375

約数の個数: 16

約数和(自身を含む): 34097760

約数和(自身を除く): 12559226

約数列:

[1, 2, 23, 46, 89, 178, 2047, 4094, 5261, 10522, 121003, 242006, 468229, 936458, 10769267, 21538534]

約数ペア:

[(1, 21538534), (2, 10769267), (23, 936458), (46, 468229), (89, 242006), (178, 121003), (2047, 10522), (4094, 5261)]