21186615

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{941}}^1$

素因数の和:1047

約数の個数: 32

約数和(自身を含む): 36172800

約数和(自身を除く): 14986185

約数列:

[1, 3, 5, 15, 19, 57, 79, 95, 237, 285, 395, 941, 1185, 1501, 2823, 4503, 4705, 7505, 14115, 17879, 22515, 53637, 74339, 89395, 223017, 268185, 371695, 1115085, 1412441, 4237323, 7062205, 21186615]

約数ペア:

[(1, 21186615), (3, 7062205), (5, 4237323), (15, 1412441), (19, 1115085), (57, 371695), (79, 268185), (95, 223017), (237, 89395), (285, 74339), (395, 53637), (941, 22515), (1185, 17879), (1501, 14115), (2823, 7505), (4503, 4705)]