18961538

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{101}}^1$

素因数の和:242

約数の個数: 32

約数和(自身を含む): 30697920

約数和(自身を除く): 11736382

約数列:

[1, 2, 37, 43, 59, 74, 86, 101, 118, 202, 1591, 2183, 2537, 3182, 3737, 4343, 4366, 5074, 5959, 7474, 8686, 11918, 93869, 160691, 187738, 220483, 256237, 321382, 440966, 512474, 9480769, 18961538]

約数ペア:

[(1, 18961538), (2, 9480769), (37, 512474), (43, 440966), (59, 321382), (74, 256237), (86, 220483), (101, 187738), (118, 160691), (202, 93869), (1591, 11918), (2183, 8686), (2537, 7474), (3182, 5959), (3737, 5074), (4343, 4366)]