20921495419

素因数分解:

${\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{661}}^1\times {\mathrm{919}}^1$

素因数の和:1723

約数の個数: 32

約数和(自身を含む): 23854878720

約数和(自身を除く): 2933383301

約数列:

[1, 11, 31, 101, 341, 661, 919, 1111, 3131, 7271, 10109, 20491, 28489, 34441, 66761, 92819, 225401, 313379, 607459, 734371, 1021009, 2069591, 2877389, 6682049, 18831229, 22765501, 31651279, 61353359, 207143519, 674886949, 1901954129, 20921495419]

約数ペア:

[(1, 20921495419), (11, 1901954129), (31, 674886949), (101, 207143519), (341, 61353359), (661, 31651279), (919, 22765501), (1111, 18831229), (3131, 6682049), (7271, 2877389), (10109, 2069591), (20491, 1021009), (28489, 734371), (34441, 607459), (66761, 313379), (92819, 225401)]