20688001465

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1\times {\mathrm{204923}}^1$

素因数の和:205320

約数の個数: 16

約数和(自身を含む): 25308933696

約数和(自身を除く): 4620932231

約数列:

[1, 5, 61, 305, 331, 1655, 20191, 100955, 204923, 1024615, 12500303, 62501515, 67829513, 339147565, 4137600293, 20688001465]

約数ペア:

[(1, 20688001465), (5, 4137600293), (61, 339147565), (305, 67829513), (331, 62501515), (1655, 12500303), (20191, 1024615), (100955, 204923)]