21488772

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{307}}^2$

素因数の和:640

約数の個数: 36

約数和(自身を含む): 52951920

約数和(自身を除く): 31463148

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 307, 614, 921, 1228, 1842, 3684, 5833, 11666, 17499, 23332, 34998, 69996, 94249, 188498, 282747, 376996, 565494, 1130988, 1790731, 3581462, 5372193, 7162924, 10744386, 21488772]

約数ペア:

[(1, 21488772), (2, 10744386), (3, 7162924), (4, 5372193), (6, 3581462), (12, 1790731), (19, 1130988), (38, 565494), (57, 376996), (76, 282747), (114, 188498), (228, 94249), (307, 69996), (614, 34998), (921, 23332), (1228, 17499), (1842, 11666), (3684, 5833)]