23121505

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{191}}^1$

素因数の和:309

約数の個数: 32

約数和(自身を含む): 31850496

約数和(自身を除く): 8728991

約数列:

[1, 5, 11, 31, 55, 71, 155, 191, 341, 355, 781, 955, 1705, 2101, 2201, 3905, 5921, 10505, 11005, 13561, 24211, 29605, 65131, 67805, 121055, 149171, 325655, 420391, 745855, 2101955, 4624301, 23121505]

約数ペア:

[(1, 23121505), (5, 4624301), (11, 2101955), (31, 745855), (55, 420391), (71, 325655), (155, 149171), (191, 121055), (341, 67805), (355, 65131), (781, 29605), (955, 24211), (1705, 13561), (2101, 11005), (2201, 10505), (3905, 5921)]