15961215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1181}}^1$

素因数の和:1259

約数の個数: 32

約数和(自身を含む): 27573696

約数和(自身を除く): 11612481

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 255, 265, 795, 901, 1181, 2703, 3543, 4505, 5905, 13515, 17715, 20077, 60231, 62593, 100385, 187779, 301155, 312965, 938895, 1064081, 3192243, 5320405, 15961215]

約数ペア:

[(1, 15961215), (3, 5320405), (5, 3192243), (15, 1064081), (17, 938895), (51, 312965), (53, 301155), (85, 187779), (159, 100385), (255, 62593), (265, 60231), (795, 20077), (901, 17715), (1181, 13515), (2703, 5905), (3543, 4505)]