25781840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{6577}}^1$

素因数の和:6604

約数の個数: 60

約数和(自身を含む): 69739956

約数和(自身を除く): 43958116

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 6577, 13154, 26308, 32885, 46039, 52616, 65770, 92078, 105232, 131540, 184156, 230195, 263080, 322273, 368312, 460390, 526160, 644546, 736624, 920780, 1289092, 1611365, 1841560, 2578184, 3222730, 3683120, 5156368, 6445460, 12890920, 25781840]

約数ペア:

[(1, 25781840), (2, 12890920), (4, 6445460), (5, 5156368), (7, 3683120), (8, 3222730), (10, 2578184), (14, 1841560), (16, 1611365), (20, 1289092), (28, 920780), (35, 736624), (40, 644546), (49, 526160), (56, 460390), (70, 368312), (80, 322273), (98, 263080), (112, 230195), (140, 184156), (196, 131540), (245, 105232), (280, 92078), (392, 65770), (490, 52616), (560, 46039), (784, 32885), (980, 26308), (1960, 13154), (3920, 6577)]