21509938

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:330

約数の個数: 32

約数和(自身を含む): 35640000

約数和(自身を除く): 14130062

約数列:

[1, 2, 19, 29, 38, 58, 131, 149, 262, 298, 551, 1102, 2489, 2831, 3799, 4321, 4978, 5662, 7598, 8642, 19519, 39038, 72181, 82099, 144362, 164198, 370861, 566051, 741722, 1132102, 10754969, 21509938]

約数ペア:

[(1, 21509938), (2, 10754969), (19, 1132102), (29, 741722), (38, 566051), (58, 370861), (131, 164198), (149, 144362), (262, 82099), (298, 72181), (551, 39038), (1102, 19519), (2489, 8642), (2831, 7598), (3799, 5662), (4321, 4978)]