166398640

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{5347}}^1$

素因数の和:5749

約数の個数: 40

約数和(自身を含む): 387943920

約数和(自身を除く): 221545280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 5347, 6224, 7780, 10694, 15560, 21388, 26735, 31120, 42776, 53470, 85552, 106940, 213880, 427760, 2079983, 4159966, 8319932, 10399915, 16639864, 20799830, 33279728, 41599660, 83199320, 166398640]

約数ペア:

[(1, 166398640), (2, 83199320), (4, 41599660), (5, 33279728), (8, 20799830), (10, 16639864), (16, 10399915), (20, 8319932), (40, 4159966), (80, 2079983), (389, 427760), (778, 213880), (1556, 106940), (1945, 85552), (3112, 53470), (3890, 42776), (5347, 31120), (6224, 26735), (7780, 21388), (10694, 15560)]