20545312

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:329

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 21790688

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 124, 139, 149, 248, 278, 298, 496, 556, 596, 992, 1112, 1192, 2224, 2384, 4309, 4448, 4619, 4768, 8618, 9238, 17236, 18476, 20711, 34472, 36952, 41422, 68944, 73904, 82844, 137888, 147808, 165688, 331376, 642041, 662752, 1284082, 2568164, 5136328, 10272656, 20545312]

約数ペア:

[(1, 20545312), (2, 10272656), (4, 5136328), (8, 2568164), (16, 1284082), (31, 662752), (32, 642041), (62, 331376), (124, 165688), (139, 147808), (149, 137888), (248, 82844), (278, 73904), (298, 68944), (496, 41422), (556, 36952), (596, 34472), (992, 20711), (1112, 18476), (1192, 17236), (2224, 9238), (2384, 8618), (4309, 4768), (4448, 4619)]