21167615

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:399

約数の個数: 32

約数和(自身を含む): 30912000

約数和(自身を除く): 9744385

約数列:

[1, 5, 7, 19, 35, 95, 133, 139, 229, 665, 695, 973, 1145, 1603, 2641, 4351, 4865, 8015, 13205, 18487, 21755, 30457, 31831, 92435, 152285, 159155, 222817, 604789, 1114085, 3023945, 4233523, 21167615]

約数ペア:

[(1, 21167615), (5, 4233523), (7, 3023945), (19, 1114085), (35, 604789), (95, 222817), (133, 159155), (139, 152285), (229, 92435), (665, 31831), (695, 30457), (973, 21755), (1145, 18487), (1603, 13205), (2641, 8015), (4351, 4865)]