18970172

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{4099}}^1$

素因数の和:4205

約数の個数: 24

約数和(自身を含む): 36162000

約数和(自身を除く): 17191828

約数列:

[1, 2, 4, 13, 26, 52, 89, 178, 356, 1157, 2314, 4099, 4628, 8198, 16396, 53287, 106574, 213148, 364811, 729622, 1459244, 4742543, 9485086, 18970172]

約数ペア:

[(1, 18970172), (2, 9485086), (4, 4742543), (13, 1459244), (26, 729622), (52, 364811), (89, 213148), (178, 106574), (356, 53287), (1157, 16396), (2314, 8198), (4099, 4628)]