21917355

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{1451}}^1$

素因数の和:1531

約数の個数: 32

約数和(自身を含む): 37635840

約数和(自身を除く): 15718485

約数列:

[1, 3, 5, 15, 19, 53, 57, 95, 159, 265, 285, 795, 1007, 1451, 3021, 4353, 5035, 7255, 15105, 21765, 27569, 76903, 82707, 137845, 230709, 384515, 413535, 1153545, 1461157, 4383471, 7305785, 21917355]

約数ペア:

[(1, 21917355), (3, 7305785), (5, 4383471), (15, 1461157), (19, 1153545), (53, 413535), (57, 384515), (95, 230709), (159, 137845), (265, 82707), (285, 76903), (795, 27569), (1007, 21765), (1451, 15105), (3021, 7255), (4353, 5035)]