20681656

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{631}}^1$

素因数の和:895

約数の個数: 32

約数和(自身を含む): 41294880

約数和(自身を除く): 20613224

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 241, 482, 631, 964, 1262, 1928, 2524, 4097, 5048, 8194, 10727, 16388, 21454, 32776, 42908, 85816, 152071, 304142, 608284, 1216568, 2585207, 5170414, 10340828, 20681656]

約数ペア:

[(1, 20681656), (2, 10340828), (4, 5170414), (8, 2585207), (17, 1216568), (34, 608284), (68, 304142), (136, 152071), (241, 85816), (482, 42908), (631, 32776), (964, 21454), (1262, 16388), (1928, 10727), (2524, 8194), (4097, 5048)]