21004215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{73699}}^1$

素因数の和:73726

約数の個数: 16

約数和(自身を含む): 35376000

約数和(自身を除く): 14371785

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 73699, 221097, 368495, 1105485, 1400281, 4200843, 7001405, 21004215]

約数ペア:

[(1, 21004215), (3, 7001405), (5, 4200843), (15, 1400281), (19, 1105485), (57, 368495), (95, 221097), (285, 73699)]