19499440

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3433}}^1$

素因数の和:3517

約数の個数: 40

約数和(自身を含む): 45988128

約数和(自身を除く): 26488688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3433, 5680, 6866, 13732, 17165, 27464, 34330, 54928, 68660, 137320, 243743, 274640, 487486, 974972, 1218715, 1949944, 2437430, 3899888, 4874860, 9749720, 19499440]

約数ペア:

[(1, 19499440), (2, 9749720), (4, 4874860), (5, 3899888), (8, 2437430), (10, 1949944), (16, 1218715), (20, 974972), (40, 487486), (71, 274640), (80, 243743), (142, 137320), (284, 68660), (355, 54928), (568, 34330), (710, 27464), (1136, 17165), (1420, 13732), (2840, 6866), (3433, 5680)]