21000228252

素因数分解:

$2^2\times 3^1\times {\mathrm{101}}^1\times {\mathrm{643}}^1\times {\mathrm{26947}}^1$

素因数の和:27698

約数の個数: 48

約数和(自身を含む): 49564486272

約数和(自身を除く): 28564258020

約数列:

[1, 2, 3, 4, 6, 12, 101, 202, 303, 404, 606, 643, 1212, 1286, 1929, 2572, 3858, 7716, 26947, 53894, 64943, 80841, 107788, 129886, 161682, 194829, 259772, 323364, 389658, 779316, 2721647, 5443294, 8164941, 10886588, 16329882, 17326921, 32659764, 34653842, 51980763, 69307684, 103961526, 207923052, 1750019021, 3500038042, 5250057063, 7000076084, 10500114126, 21000228252]

約数ペア:

[(1, 21000228252), (2, 10500114126), (3, 7000076084), (4, 5250057063), (6, 3500038042), (12, 1750019021), (101, 207923052), (202, 103961526), (303, 69307684), (404, 51980763), (606, 34653842), (643, 32659764), (1212, 17326921), (1286, 16329882), (1929, 10886588), (2572, 8164941), (3858, 5443294), (7716, 2721647), (26947, 779316), (53894, 389658), (64943, 323364), (80841, 259772), (107788, 194829), (129886, 161682)]