18874904

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{5399}}^1$

素因数の和:5447

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 20005096

約数列:

[1, 2, 4, 8, 19, 23, 38, 46, 76, 92, 152, 184, 437, 874, 1748, 3496, 5399, 10798, 21596, 43192, 102581, 124177, 205162, 248354, 410324, 496708, 820648, 993416, 2359363, 4718726, 9437452, 18874904]

約数ペア:

[(1, 18874904), (2, 9437452), (4, 4718726), (8, 2359363), (19, 993416), (23, 820648), (38, 496708), (46, 410324), (76, 248354), (92, 205162), (152, 124177), (184, 102581), (437, 43192), (874, 21596), (1748, 10798), (3496, 5399)]