21688142

素因数分解:

$2^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1\times {\mathrm{281}}^1$

素因数の和:476

約数の個数: 32

約数和(自身を含む): 38577600

約数和(自身を除く): 16889458

約数列:

[1, 2, 7, 14, 37, 74, 149, 259, 281, 298, 518, 562, 1043, 1967, 2086, 3934, 5513, 10397, 11026, 20794, 38591, 41869, 72779, 77182, 83738, 145558, 293083, 586166, 1549153, 3098306, 10844071, 21688142]

約数ペア:

[(1, 21688142), (2, 10844071), (7, 3098306), (14, 1549153), (37, 586166), (74, 293083), (149, 145558), (259, 83738), (281, 77182), (298, 72779), (518, 41869), (562, 38591), (1043, 20794), (1967, 11026), (2086, 10397), (3934, 5513)]