20715695

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4139}}^1$

素因数の和:4175

約数の個数: 32

約数和(自身を含む): 33384960

約数和(自身を除く): 12669265

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4139, 5005, 20695, 28973, 45529, 53807, 144865, 227645, 269035, 318703, 376649, 591877, 1593515, 1883245, 2959385, 4143139, 20715695]

約数ペア:

[(1, 20715695), (5, 4143139), (7, 2959385), (11, 1883245), (13, 1593515), (35, 591877), (55, 376649), (65, 318703), (77, 269035), (91, 227645), (143, 144865), (385, 53807), (455, 45529), (715, 28973), (1001, 20695), (4139, 5005)]