21503216

素因数分解:

$2^4\times 7^1\times {\mathrm{37}}^1\times {\mathrm{5189}}^1$

素因数の和:5241

約数の個数: 40

約数和(自身を含む): 48910560

約数和(自身を除く): 27407344

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 37, 56, 74, 112, 148, 259, 296, 518, 592, 1036, 2072, 4144, 5189, 10378, 20756, 36323, 41512, 72646, 83024, 145292, 191993, 290584, 383986, 581168, 767972, 1343951, 1535944, 2687902, 3071888, 5375804, 10751608, 21503216]

約数ペア:

[(1, 21503216), (2, 10751608), (4, 5375804), (7, 3071888), (8, 2687902), (14, 1535944), (16, 1343951), (28, 767972), (37, 581168), (56, 383986), (74, 290584), (112, 191993), (148, 145292), (259, 83024), (296, 72646), (518, 41512), (592, 36323), (1036, 20756), (2072, 10378), (4144, 5189)]