21053444

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{7487}}^1$

素因数の和:7547

約数の個数: 24

約数和(自身を含む): 39836160

約数和(自身を除く): 18782716

約数列:

[1, 2, 4, 19, 37, 38, 74, 76, 148, 703, 1406, 2812, 7487, 14974, 29948, 142253, 277019, 284506, 554038, 569012, 1108076, 5263361, 10526722, 21053444]

約数ペア:

[(1, 21053444), (2, 10526722), (4, 5263361), (19, 1108076), (37, 569012), (38, 554038), (74, 284506), (76, 277019), (148, 142253), (703, 29948), (1406, 14974), (2812, 7487)]