25990520

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{983}}^1$

素因数の和:1655

約数の個数: 32

約数和(自身を含む): 58626720

約数和(自身を除く): 32636200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 983, 1322, 1966, 2644, 3305, 3932, 4915, 5288, 6610, 7864, 9830, 13220, 19660, 26440, 39320, 649763, 1299526, 2599052, 3248815, 5198104, 6497630, 12995260, 25990520]

約数ペア:

[(1, 25990520), (2, 12995260), (4, 6497630), (5, 5198104), (8, 3248815), (10, 2599052), (20, 1299526), (40, 649763), (661, 39320), (983, 26440), (1322, 19660), (1966, 13220), (2644, 9830), (3305, 7864), (3932, 6610), (4915, 5288)]