21012495

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{293}}^1\times {\mathrm{683}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 38610432

約数和(自身を除く): 17597937

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 293, 683, 879, 1465, 2049, 2051, 3415, 4395, 4781, 6153, 10245, 10255, 14343, 23905, 30765, 71715, 200119, 600357, 1000595, 1400833, 3001785, 4202499, 7004165, 21012495]

約数ペア:

[(1, 21012495), (3, 7004165), (5, 4202499), (7, 3001785), (15, 1400833), (21, 1000595), (35, 600357), (105, 200119), (293, 71715), (683, 30765), (879, 23905), (1465, 14343), (2049, 10255), (2051, 10245), (3415, 6153), (4395, 4781)]