21621992

素因数分解:

$2^3\times 7^1\times {\mathrm{151}}^1\times {\mathrm{2557}}^1$

素因数の和:2721

約数の個数: 32

約数和(自身を含む): 46657920

約数和(自身を除く): 25035928

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 151, 302, 604, 1057, 1208, 2114, 2557, 4228, 5114, 8456, 10228, 17899, 20456, 35798, 71596, 143192, 386107, 772214, 1544428, 2702749, 3088856, 5405498, 10810996, 21621992]

約数ペア:

[(1, 21621992), (2, 10810996), (4, 5405498), (7, 3088856), (8, 2702749), (14, 1544428), (28, 772214), (56, 386107), (151, 143192), (302, 71596), (604, 35798), (1057, 20456), (1208, 17899), (2114, 10228), (2557, 8456), (4228, 5114)]