21221109

素因数分解:

$3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{2879}}^1$

素因数の和:2911

約数の個数: 40

約数和(自身を含む): 39029760

約数和(自身を除く): 17808651

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 63, 81, 91, 117, 189, 273, 351, 567, 819, 1053, 2457, 2879, 7371, 8637, 20153, 25911, 37427, 60459, 77733, 112281, 181377, 233199, 261989, 336843, 544131, 785967, 1010529, 1632393, 2357901, 3031587, 7073703, 21221109]

約数ペア:

[(1, 21221109), (3, 7073703), (7, 3031587), (9, 2357901), (13, 1632393), (21, 1010529), (27, 785967), (39, 544131), (63, 336843), (81, 261989), (91, 233199), (117, 181377), (189, 112281), (273, 77733), (351, 60459), (567, 37427), (819, 25911), (1053, 20153), (2457, 8637), (2879, 7371)]