19957890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1307}}^1$

素因数の和:1826

約数の個数: 32

約数和(自身を含む): 48029760

約数和(自身を除く): 28071870

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 509, 1018, 1307, 1527, 2545, 2614, 3054, 3921, 5090, 6535, 7635, 7842, 13070, 15270, 19605, 39210, 665263, 1330526, 1995789, 3326315, 3991578, 6652630, 9978945, 19957890]

約数ペア:

[(1, 19957890), (2, 9978945), (3, 6652630), (5, 3991578), (6, 3326315), (10, 1995789), (15, 1330526), (30, 665263), (509, 39210), (1018, 19605), (1307, 15270), (1527, 13070), (2545, 7842), (2614, 7635), (3054, 6535), (3921, 5090)]