21298928

素因数分解:

$2^4\times 7^3\times {\mathrm{3881}}^1$

素因数の和:3910

約数の個数: 40

約数和(自身を含む): 48136800

約数和(自身を除く): 26837872

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2744, 3881, 5488, 7762, 15524, 27167, 31048, 54334, 62096, 108668, 190169, 217336, 380338, 434672, 760676, 1331183, 1521352, 2662366, 3042704, 5324732, 10649464, 21298928]

約数ペア:

[(1, 21298928), (2, 10649464), (4, 5324732), (7, 3042704), (8, 2662366), (14, 1521352), (16, 1331183), (28, 760676), (49, 434672), (56, 380338), (98, 217336), (112, 190169), (196, 108668), (343, 62096), (392, 54334), (686, 31048), (784, 27167), (1372, 15524), (2744, 7762), (3881, 5488)]