21718235

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{2969}}^1$

素因数の和:3011

約数の個数: 32

約数和(自身を含む): 34214400

約数和(自身を除く): 12496165

約数列:

[1, 5, 7, 11, 19, 35, 55, 77, 95, 133, 209, 385, 665, 1045, 1463, 2969, 7315, 14845, 20783, 32659, 56411, 103915, 163295, 228613, 282055, 394877, 620521, 1143065, 1974385, 3102605, 4343647, 21718235]

約数ペア:

[(1, 21718235), (5, 4343647), (7, 3102605), (11, 1974385), (19, 1143065), (35, 620521), (55, 394877), (77, 282055), (95, 228613), (133, 163295), (209, 103915), (385, 56411), (665, 32659), (1045, 20783), (1463, 14845), (2969, 7315)]