15216921

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{367}}^1$

素因数の和:661

約数の個数: 24

約数和(自身を含む): 23422464

約数和(自身を除く): 8205543

約数列:

[1, 3, 9, 17, 51, 153, 271, 367, 813, 1101, 2439, 3303, 4607, 6239, 13821, 18717, 41463, 56151, 99457, 298371, 895113, 1690769, 5072307, 15216921]

約数ペア:

[(1, 15216921), (3, 5072307), (9, 1690769), (17, 895113), (51, 298371), (153, 99457), (271, 56151), (367, 41463), (813, 18717), (1101, 13821), (2439, 6239), (3303, 4607)]