21387090

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{53}}^1\times {\mathrm{13451}}^1$

素因数の和:13514

約数の個数: 32

約数和(自身を含む): 52301376

約数和(自身を除く): 30914286

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 53, 106, 159, 265, 318, 530, 795, 1590, 13451, 26902, 40353, 67255, 80706, 134510, 201765, 403530, 712903, 1425806, 2138709, 3564515, 4277418, 7129030, 10693545, 21387090]

約数ペア:

[(1, 21387090), (2, 10693545), (3, 7129030), (5, 4277418), (6, 3564515), (10, 2138709), (15, 1425806), (30, 712903), (53, 403530), (106, 201765), (159, 134510), (265, 80706), (318, 67255), (530, 40353), (795, 26902), (1590, 13451)]