21268065

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15581}}^1$

素因数の和:15609

約数の個数: 32

約数和(自身を含む): 41884416

約数和(自身を除く): 20616351

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15581, 46743, 77905, 109067, 202553, 233715, 327201, 545335, 607659, 1012765, 1417871, 1636005, 3038295, 4253613, 7089355, 21268065]

約数ペア:

[(1, 21268065), (3, 7089355), (5, 4253613), (7, 3038295), (13, 1636005), (15, 1417871), (21, 1012765), (35, 607659), (39, 545335), (65, 327201), (91, 233715), (105, 202553), (195, 109067), (273, 77905), (455, 46743), (1365, 15581)]