20507955

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{419}}^1$

素因数の和:691

約数の個数: 32

約数和(自身を含む): 35562240

約数和(自身を除く): 15054285

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 251, 419, 753, 1255, 1257, 2095, 3263, 3765, 5447, 6285, 9789, 16315, 16341, 27235, 48945, 81705, 105169, 315507, 525845, 1367197, 1577535, 4101591, 6835985, 20507955]

約数ペア:

[(1, 20507955), (3, 6835985), (5, 4101591), (13, 1577535), (15, 1367197), (39, 525845), (65, 315507), (195, 105169), (251, 81705), (419, 48945), (753, 27235), (1255, 16341), (1257, 16315), (2095, 9789), (3263, 6285), (3765, 5447)]