21417890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2459}}^1$

素因数の和:2546

約数の個数: 32

約数和(自身を含む): 42154560

約数和(自身を除く): 20736670

約数列:

[1, 2, 5, 10, 13, 26, 65, 67, 130, 134, 335, 670, 871, 1742, 2459, 4355, 4918, 8710, 12295, 24590, 31967, 63934, 159835, 164753, 319670, 329506, 823765, 1647530, 2141789, 4283578, 10708945, 21417890]

約数ペア:

[(1, 21417890), (2, 10708945), (5, 4283578), (10, 2141789), (13, 1647530), (26, 823765), (65, 329506), (67, 319670), (130, 164753), (134, 159835), (335, 63934), (670, 31967), (871, 24590), (1742, 12295), (2459, 8710), (4355, 4918)]