17720890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2269}}^1$

素因数の和:2358

約数の個数: 32

約数和(自身を含む): 35303040

約数和(自身を除く): 17582150

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 2269, 3905, 4538, 7810, 11345, 22690, 24959, 49918, 124795, 161099, 249590, 322198, 805495, 1610990, 1772089, 3544178, 8860445, 17720890]

約数ペア:

[(1, 17720890), (2, 8860445), (5, 3544178), (10, 1772089), (11, 1610990), (22, 805495), (55, 322198), (71, 249590), (110, 161099), (142, 124795), (355, 49918), (710, 24959), (781, 22690), (1562, 11345), (2269, 7810), (3905, 4538)]