21149703

素因数分解:

$3^2\times {\mathrm{53}}^1\times {\mathrm{101}}^1\times {\mathrm{439}}^1$

素因数の和:599

約数の個数: 24

約数和(自身を含む): 31505760

約数和(自身を除く): 10356057

約数列:

[1, 3, 9, 53, 101, 159, 303, 439, 477, 909, 1317, 3951, 5353, 16059, 23267, 44339, 48177, 69801, 133017, 209403, 399051, 2349967, 7049901, 21149703]

約数ペア:

[(1, 21149703), (3, 7049901), (9, 2349967), (53, 399051), (101, 209403), (159, 133017), (303, 69801), (439, 48177), (477, 44339), (909, 23267), (1317, 16059), (3951, 5353)]