25901840

素因数分解:

$2^4\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1627}}^1$

素因数の和:1839

約数の個数: 40

約数和(自身を含む): 60561600

約数和(自身を除く): 34659760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 199, 398, 796, 995, 1592, 1627, 1990, 3184, 3254, 3980, 6508, 7960, 8135, 13016, 15920, 16270, 26032, 32540, 65080, 130160, 323773, 647546, 1295092, 1618865, 2590184, 3237730, 5180368, 6475460, 12950920, 25901840]

約数ペア:

[(1, 25901840), (2, 12950920), (4, 6475460), (5, 5180368), (8, 3237730), (10, 2590184), (16, 1618865), (20, 1295092), (40, 647546), (80, 323773), (199, 130160), (398, 65080), (796, 32540), (995, 26032), (1592, 16270), (1627, 15920), (1990, 13016), (3184, 8135), (3254, 7960), (3980, 6508)]