21207738

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{3923}}^1$

素因数の和:3998

約数の個数: 32

約数和(自身を含む): 45769536

約数和(自身を除く): 24561798

約数列:

[1, 2, 3, 6, 17, 34, 51, 53, 102, 106, 159, 318, 901, 1802, 2703, 3923, 5406, 7846, 11769, 23538, 66691, 133382, 200073, 207919, 400146, 415838, 623757, 1247514, 3534623, 7069246, 10603869, 21207738]

約数ペア:

[(1, 21207738), (2, 10603869), (3, 7069246), (6, 3534623), (17, 1247514), (34, 623757), (51, 415838), (53, 400146), (102, 207919), (106, 200073), (159, 133382), (318, 66691), (901, 23538), (1802, 11769), (2703, 7846), (3923, 5406)]