19419320

素因数分解:

$2^3\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1187}}^1$

素因数の和:1607

約数の個数: 32

約数和(自身を含む): 43837200

約数和(自身を除く): 24417880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 409, 818, 1187, 1636, 2045, 2374, 3272, 4090, 4748, 5935, 8180, 9496, 11870, 16360, 23740, 47480, 485483, 970966, 1941932, 2427415, 3883864, 4854830, 9709660, 19419320]

約数ペア:

[(1, 19419320), (2, 9709660), (4, 4854830), (5, 3883864), (8, 2427415), (10, 1941932), (20, 970966), (40, 485483), (409, 47480), (818, 23740), (1187, 16360), (1636, 11870), (2045, 9496), (2374, 8180), (3272, 5935), (4090, 4748)]