19917519

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{4871}}^1$

素因数の和:4950

約数の個数: 16

約数和(自身を含む): 28062720

約数和(自身を除く): 8145201

約数列:

[1, 3, 29, 47, 87, 141, 1363, 4089, 4871, 14613, 141259, 228937, 423777, 686811, 6639173, 19917519]

約数ペア:

[(1, 19917519), (3, 6639173), (29, 686811), (47, 423777), (87, 228937), (141, 141259), (1363, 14613), (4089, 4871)]