1813306840

素因数分解:

$2^3\times 5^1\times {\mathrm{3943}}^1\times {\mathrm{11497}}^1$

素因数の和:15451

約数の個数: 32

約数和(自身を含む): 4081330080

約数和(自身を除く): 2268023240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 3943, 7886, 11497, 15772, 19715, 22994, 31544, 39430, 45988, 57485, 78860, 91976, 114970, 157720, 229940, 459880, 45332671, 90665342, 181330684, 226663355, 362661368, 453326710, 906653420, 1813306840]

約数ペア:

[(1, 1813306840), (2, 906653420), (4, 453326710), (5, 362661368), (8, 226663355), (10, 181330684), (20, 90665342), (40, 45332671), (3943, 459880), (7886, 229940), (11497, 157720), (15772, 114970), (19715, 91976), (22994, 78860), (31544, 57485), (39430, 45988)]