21255405

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{373}}^1$

素因数の和:541

約数の個数: 32

約数和(自身を含む): 35544960

約数和(自身を除く): 14289555

約数列:

[1, 3, 5, 15, 29, 87, 131, 145, 373, 393, 435, 655, 1119, 1865, 1965, 3799, 5595, 10817, 11397, 18995, 32451, 48863, 54085, 56985, 146589, 162255, 244315, 732945, 1417027, 4251081, 7085135, 21255405]

約数ペア:

[(1, 21255405), (3, 7085135), (5, 4251081), (15, 1417027), (29, 732945), (87, 244315), (131, 162255), (145, 146589), (373, 56985), (393, 54085), (435, 48863), (655, 32451), (1119, 18995), (1865, 11397), (1965, 10817), (3799, 5595)]