20790742427

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{27457}}^1$

素因数の和:27687

約数の個数: 32

約数和(自身を含む): 26238425472

約数和(自身を除く): 5447683045

約数列:

[1, 7, 13, 53, 91, 157, 371, 689, 1099, 2041, 4823, 8321, 14287, 27457, 58247, 108173, 192199, 356941, 757211, 1455221, 2498587, 4310749, 10186547, 18917873, 30175243, 56039737, 132425111, 228469697, 392278159, 1599287879, 2970106061, 20790742427]

約数ペア:

[(1, 20790742427), (7, 2970106061), (13, 1599287879), (53, 392278159), (91, 228469697), (157, 132425111), (371, 56039737), (689, 30175243), (1099, 18917873), (2041, 10186547), (4823, 4310749), (8321, 2498587), (14287, 1455221), (27457, 757211), (58247, 356941), (108173, 192199)]